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Publications of Richard F. Kay    :chronological  alphabetical  combined  bibtex listing:

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Books

  1. Vizcaíno, SF; Kay, RF; Bargo, MS, Early Miocene Paleobiology in Patagonia: High-latitude paleocommunities of the Santa Cruz Formation (2012), pp. 370, Cambridge University Press  [author's comments]
  2. Madden, RH; Vucetich, G; Carlini, AA; Kay, RF, The Paleontology of Gran Barranca: Evolution and Environmental Change through the Middle Cenozoic of Patagonia (2010), pp. 448, University of Cambridge Press, Cambridge, UK  [author's comments]
  3. Simons, EL; Ankel-Simons, F; Chatrath, PS; Kay, RS; Williams, B; Fleagle, JG; Gebo, DL; Beard, CK; Dawson, M; Tattersall, I; Rose, KD, Outrage at high price paid for a fossil., Nature, vol. 460 no. 7254 (July, 2009), pp. 456, ISSN 0028-0836 [doi]
  4. Ross, C; Kay, RF, Anthropoid Origins (January, 2004), pp. 749 pages, Springer Science & Business Media, ISBN 0306481200  [abs]
  5. Ross, C.F. and R.F. Kay, Anthropoid Origins: New Visions (Advances in Primatology) (2004), pp. 747, Kluwer/Plenum
  6. Ross, CF; Kay, RF, Anthropoid Origins: New Visions (2004), pp. 749, Kluwer/Plenum Publishers
  7. Kirk, EC; Cartmill, M; Kay, RF; Lemelin, P, Comment on "Grasping primate origins"., Science (New York, N.Y.), vol. 300 no. 5620 (May, 2003), pp. 741 [12730582], [doi]
  8. Plavcan, JM; Kay, RF; Jungers, WL; van Schaik, C, Reconstructing Behavior in the Primate Fossil Record, in Advances in Primatology (2001), pp. 437, Kluwer/Plenum Publishers
  9. Kay, RF; Madden, RH; Ciffeli, RL; Flynn, JJ, Vertebrate Paleontology in the Neotropics. (1997), pp. 592, Smithsonian Institution Press
  10. Fleagle, JG; Kay, RF, Anthropoid Origins: The Fossil Evidence (1994), pp. 708, Plenum Press

Book Sections/Chapters

  1. Kay, RF; Grine, FE, Tooth morphology, wear and diet in australopithecus and paran thropus from Southern Africa, in Evolutionary History of the "Robust" Australopithecines (January, 2017), pp. 427-447, ISBN 9780202361376 [doi]  [abs]
  2. Kay, R.F. Meldrum, DJ Takai, M., Evolutionary Biology and Conservation of Titis, Sakis and Uacaris., in Evolutionary Biology and Conservation of Titis, Sakis and Uacaris, edited by Veiga, L Barnett, AA Ferrari, SF Norconk, MA (2013), pp. 3-12, Cambridge University Press
  3. Kay, RF; Meldrum, DJ; Takai, M, Pitheciidae and other platyrrhine seed predators, in Evolutionary Biology and Conservation of Titis, Sakis and Uacaris., edited by Veiga, L; Barnett, AA; Ferrari, SF; Norconk, MA (2013), pp. 3-12, Cambridge University Press, Cambridge, UK
  4. Kay, RF; Perry, JMG; Malinzak, MD; Allen, KL; Kirk, EC; Plavcan, JM; Fleagle, JG, The paleobiology of Santacrucian primates, in Early Miocene Paleobiology in Patagonia: High-latitude paleocommunities of the Santa Cruz Formation, edited by Vizcaíno, SF; Kay, RF; Bargo, MS (2012), pp. 306-330, Cambridge University Press, Cambridge, UK
  5. Kay, RF; Vizcaíno, SF; Bargo, MS, A review of the paleoenvironment and paleoecology of the Miocene Santa Cruz Formation, in Early Miocene Paleobiology in Patagonia: High-Latitude Paleocommunities of the Santa Cruz Formation, edited by Vizcaíno, SF; Kay, RF; Bargo, MS (2012), pp. 331-364, Cambridge University Press, Cambridge, UK
  6. Vizcaíno, SF; Kay, RF; Bargo, MS, Background for a paleoecological study of the Santa Cruz Formation (late Early Miocene) on the Atlantic Coast of Patagonia, in Early Miocene Paleobiology in Patagonia: High-latitude paleocommunities of the Santa Cruz Formation, edited by Vizcaíno, SF; Kay, RF; Bargo, MS (2012), pp. 1-22, Cambridge University Press, Cambridge, UK
  7. Kay, RF, A New Primate from the Early Miocene of Gran Barranca, Chubut Province, Argentina: Paleoecological Implications, in The Paleontology of Gran Barranca: Evolution and Environmental Change through the Middle Cenozoic of Patagonia, edited by Madden, RH; Vucetich, G; Carlini, AA; Kay, RF (2010), pp. 220-239, Cambridge University Press, Cambridge, UK
  8. Madden, RH; Carlini, AA; Vucetich, MG; Kay, RF, Preface to The Paleontology of Gran Barranca: Evolution and Environmental Change through the Middle Cenozoic of Patagonia, in The Paleontology of Gran Barranca: Evolution and Environmental Change through the Middle Cenozoic of Patagonia, edited by Madden, RH; Carlini, AA; Vucetich, MG; Kay, RF (2010), pp. ix-x, Cambridge University Press, Cambridge, UK
  9. Ré, GH; Bellosi, ES; Heizler, M; Vilas, JF; Madden, RH; Carlini, AA; Kay, RF; Vucetich, MG, A geochronology for the Sarmiento Formation at Gran Barranca, in The Paleontology of Gran Barranca: Evolution and Environmental Change through the Middle Cenozoic of Patagonia, edited by Madden, RH; Vucetich, G; Carlini, AA; Kay, RF (2010), pp. 46-60, Cambridge University Press, Cambridge, UK
  10. Madden, RH; Carlini, AA; Vucetich, MG; Kay, RF, Gran Barranca: a twenty-three million year record of Middle-Cenozoic faunal evolution in Patagonia, in The Paleontology of Gran Barranca: Evolution and Environmental Change through the Middle Cenozoic of Patagonia, edited by Madden, RH; Vucetich, G; Carlini, AA; Kay, RF (2010), pp. 423-449, Cambridge University Press, Cambridge, UK
  11. Madden, RH; Carlini, AA; Vucetich, MG; Kay, RF, Gran Barranca: a twenty-three million year record of Middle-Cenozoic faunal evolution in Patagonia, in The Paleontology of Gran Barranca: Evolution and Environmental Change through the Middle Cenozoic of Patagonia, edited by Madden, RH; Vucetich, G; Carlini, AA; Kay, RF (2010), Cambridge University Press
  12. Teaford, M; Ungar, P; Kay, RF, Molar shape and molar microwear in the Koobi Fora monkeys: ecomorphological implications, in Koobi Fora Research Project, Volume VI, The Fossil Monkeys, edited by Jablonski, N; Leakey, MG (2008), pp. 337-358, California Academy of Sciences
  13. Kay, R.F., B.A. Williams, C. Ross, M. Takai, and N. Shigehara, Anthropoid origins: a phylogenetic analysis, in Anthropoid Origins: New Visions, edited by C.F. Ross and R.F. Kay (2004), pp. 91-135, Kluwer/Plenum: New York
  14. Kay, RF; Williams, BA; Ross, CF; Takai, M; Shigehara, N, Anthropoid origins: a phylogenetic analysis, in Anthropoid Origins: New Visions, edited by Ross, CF; Kay, RF (2004), pp. 91-135, Kluwer/Plenum
  15. Kirk, EC; Kay, RF, The evolution of high visual acuity in the Anthropoidea, in Anthropoid Origins: New Visions, edited by Ross, CF; Kay, RF (2004), pp. 539-602, Kluwer/Plenum Publishing
  16. Ross, CF; Kay, R, Anthropoid Origins: Retrospective and Prospective, in Anthropoid Origins: New Visions, edited by Ross, CF; Kay, RF (2004), pp. 699-737, Kluwer/Plenum Publishing
  17. Ross, CF; Kay, RF, Evolving perspectives on Anthropoidea, in Anthropoid Origins: New Visions, edited by Ross, CF; Kay, RF (2004), pp. 3-41, Kulwer/Plenum
  18. Kay, RF; Williams, BA; Anaya, F, The adaptations of Branisella boliviana, the earliest South American monkey, in Reconstructing Behavior in the Primate Fossil Record, edited by Plavcan, JM; van Schaik, C; Kay, RF; Jungers, WL (2002), pp. 339-370, Kluwer Academic/Plenum Publishers
  19. Plavcan, J. M.Kay, R. F.Jungers, W. L.van Schaik, C., Reconstructing behavior in the fossil record, in Reconstructing Behavior in the Primate Fossil Record, edited by Plavcan, J. M.Kay, R. F.Jungers, W. L.van Schaik, C. (2001)
  20. Kay, RF, Teeth, in Encyclopedia of Evolution and Prehistory, 2nd Edition, edited by Delson, E; Tattersall, I; Couvering, JAV; Brooks, A (2000), pp. 695-703, Garland Pub. Co.
  21. Kay, RF, Parapithecidae, in Encyclopedia of Evolution and Prehistory, 2nd Edition, edited by Delson, E; Tattersall, I; VanCouvering, JA; Brooks, A (2000), pp. 545-548, Garland Pub. Co.
  22. Kay, RF, Diet, in Encyclopedia of Evolution and Prehistory, 2nd Edition, edited by Delson, E; Tattersall, I; VanCouvering, JA; Brooks, A (2000), pp. 208-212, Garland Pub. Co.
  23. Kay, RF; Delson, E, Oligopithecidae, in Encyclopedia of Evolution and Prehistory, 2nd Edition, edited by Delson, E; Tattersall, I; VanCouvering, JA; Brooks, A (2000), pp. 490-493, Garland Pub. Co.
  24. Kay, RF; Van Couvering, JA, Fayum, in Encyclopedia of Evolution and Prehistory, 2nd Edition, edited by Delson, E; Tattersall, I; VanCouvering, JA; Brooks, A (2000), pp. 265-267, Garland Pub. Co.
  25. Van Couvering, JA; Kay, RF, Oligocene, in Encyclopedia of Evolution and Prehistory, 2nd Edition, 2nd Edition, edited by Delson, E; Tattersall, I; VanCouvering, JA; Brooks, A (2000), pp. 489-490, Garland Pub. Co.
  26. Kay, R.F. and D.J. Meldrum, A new small platyrrhine and the phyletic position of Callitrichinae, in Vertebrate Paleontology in the Neotropics, edited by R.F. Kay, et al. (1997), pp. 435-458, Smithsonian Institution Press: Washington, D.C.
  27. Fleagle, JG; Kay, RF, Platyrrhines, catarrhines and the fossil record, in New World Primates: Ecology, Evolution and Behavior, edited by Kinzey, WG (1997), pp. 3-24, Aldine
  28. Fleagle, JG; Kay, RF; Anthony, MRL, Fossil New World monkeys, in Mammalian Evolution in the Neotropics, edited by Kay, RF; Madden, RH; Cifelli, RL; Flynn, JJ (1997), pp. 473-495, Smithsonian Institution Press
  29. Kay, RF; Madden, RH, Paleogeography and paleoecology, in Mammalian Evolution in the Neotropics, edited by Kay, RF; Madden, RH; Cifelli, RL; Flynn, JJ (1997), pp. 520-550, Smithsonian Institution Press
  30. Kay, RF; Meldrum, DJ, A new small platyrrhine from the Miocene of Colombia and the phyletic position of Callitrichinae, in Vertebrate Paleontology in the Neotropics, edited by Kay, RF; Madden, RH; Cifelli, RL; Flynn, JJ (1997), pp. 435-458, Smithsonian Institution Press
  31. Kay, RF; Ungar, P, Dental evidence for diet in some Miocene catarrhines with comments on the effects of phylogeny on the interpretation of adaptation, in Function, Phylogeny and Fossils: Miocene Hominoids and Great Ape and Human Origins, edited by Begun, DR; Ward, C; Rose, M (1997), pp. 131-151, Plenum Press
  32. Madden, RH; Guerrero, J; Kay, RF; Flynn, JJ; Swisher III, CC; Walton, AH, The Laventan Stage and Laventan Age: New chronostratigraphic and geochronologic units for the Miocene of South America, in Vertebrate Paleontology in the Neotropics., edited by Kay, RF; Madden, RH; Cifelli, RL; Flynn, JJ (1997), pp. 499-519, Smithsonian Institution Press
  33. Meldrum, DJ; Kay, RF, The postcranial skeleton of Miocene platyrrhine primates, in Vertebrate Paleontology in the Neotropics, edited by Kay, RF; Madden, RH; Cifelli, RL; Flynn, JJ (1997), pp. 459-472, Smithsonian Institution Press
  34. Kay, R.F. and B.A. Williams, Dental evidence for anthropoid origins., in Anthropoid Origins, edited by J.G. Fleagle and R.F. Kay (1994), pp. 361-446, Plenum Press: New York
  35. Fleagle, J.G. and R.F. Kay, Anthropoid origins: Past, present, and future., in Anthropoid Origins, edited by J.G. Fleagle and R.F. Kay, vol. 675-698 (1994), Plenum Press: New York
  36. Fleagle, JG; Kay, RF, Anthropoid origins: past, present, and future., in Anthropoid Origins: The Fossil Evidence, edited by Fleagle, JG; Kay, RF (1994), pp. 675-698, Plenum Press
  37. Kay, RF; Williams, BA, Dental evidence for anthropoid origins., in Anthropoid Origins: The Fossil Evidence, edited by Fleagle, JG; Kay, RF (1994), pp. 361-446, Plenum Press
  38. Kay, RF; Williams, BA, Dental evidence for anthropoid origins, vol. Suppl. 14 (1992), pp. 98
  39. Rasmussen, DT; Kay, RF, A Miocene Anhinga from Colombia, and comments on the zoogeographic relationships of South America's Tertiary avifanua, in Avian Paleontology, Special Publication, Nat. Hist. Mus. of Los Angeles County, Los Angeles: Los Angeles, edited by Campell, KE (1992), pp. 225-230, Special Publication, Nat. Hist. Mus. of Los Angeles County, Los Angeles
  40. Kay, RF; Grine, FE, Tooth Morphology, wear, and diet in Austrolopithecus and Paranthropus., in Evolutionary History of the "Robust" Austrolopithecines, The Evolutionary History of the Robust Austrolopithecus, edited by Grine, FE (1989), pp. 427-447, Aldine de Gruyter
  41. Kay, RF, Parapithecidae, in Encyclopedia of Human Evolution and Prehistory, edited by Tattersal, I; Delson, E; VanCouvering, J (1988), pp. 440-443, Garland Pub.
  42. Kay, RF, Teeth, in Encyclopedia of Human Evolution and Prehistory, edited by Tattersal, I; Delson, E; VanCouvering, J (1988), pp. 571-578, Garland Pub.
  43. Kay, RF, Diet, in Encyclopedia of Human Evolution and Prehistory, edited by Tattersal, I; Delson, E; VanCouvering, J (1988), pp. 155-159, Garland Pub.
  44. Kay, RF, Oligocene, in Encyclopedia of Human Evolution and Prehistory, edited by Tattersal, I; Delson, E; VanCouvering, J (1988), pp. 392-394, Garland Pub.
  45. Kay, RF, Fayum, in Encyclopedia of Human Evolution and Prehistory, edited by Tattersal, I; Delson, E; VanCouvering, J (1988), pp. 205-206, Garland Pub.
  46. Fleagle, JG; Kay, RF, The paleobiology of catarrhines, in Ancestors: The Hard Evidence, edited by Delson, E (1985), pp. 23-36, Alan R. Liss, Inc.
  47. Kay, RF, On the use of anatomical features to infer foraging behavior in extinct primates, in Adaptations for Foraging in Nonhuman Primates, edited by Cant, J; Rodman, P (1984), pp. 21-53, Columbia University Press
  48. Kay, RF; Covert, HH, Anatomy and behaviour of extinct primates., in Food Acquisition and Processing in Primates, edited by Chivers, DJ; Wood, BA; Bilsborough, A (1984), pp. 467-508, Plenum Press
  49. Fleagle, JG; Kay, RF, New interpretations of the phyletic position of Oligocene hominoids, in New Interpretations of Ape and Human Ancestry, edited by Ciochon, RL; Corruccini, RS (1983), pp. 181-210, Plenum Press
  50. Kay, RF; Simons, EL, A reassessment of the relationship between later Miocene and subsequent Hominoidea, in New Interpretations of Ape and Human Ancestry, edited by Ciochon, RL; Corruccini, RS (1983), pp. 577-624, Plenum Press
  51. Kay, RF, Ramapithecines and Human Origins, in McGraw-Hill Yearbook of Science and Technology (1982), pp. 1-11
  52. Kay, RF; Simons, EL, Apidium and Parapithecus, in McGraw-Hill Yearbook of Science and Technology, McGraw-Hill Yearbook of Science and Technology (1981), pp. 103-105
  53. Simons, EL; Kay, RF, Aegyptopithecus and Propliopithecus, in McGraw-Hill Yearbook of Science and Technology, McGraw-Hill Yearbook of Science and Technology (1981), pp. 77-80
  54. Kay, RF, Platyrrhine origins: a reappraisal of the dental evidence., in Evolutionary Biology of the New World Monkeys and Continental Drift, edited by Ciochon, R; Chiarelli, B (1980), pp. 159-188, Plenum Press
  55. Kay, R.F. and W.L. Hylander, The dental structure of mammalian folivores with special reference to primates and Phalangeroidea (Marsupialia), in The Ecology of Arboreal Folivores, edited by G.G. Montgomery (1978), pp. 173 - 191, Smithsonian Institution Press: Washington, D. C.
  56. Cartmill, M; Kay, RF, Craniodental morphology, tarsier affinities, and primate suborders, in Recent Advances in Primatology: Evolution, edited by Chivers, DJ; Joysey, KA (1978), pp. 205-214, Academic Press
  57. Fleagle, JG; Kay, RF, New interpretations of the phyletic position of Oligocene hominoids, in New Interpretations of Ape and Human Ancestry, edited by Ciochon, RL; Corruccini, RS (1978), pp. 181-210, Plenum Press
  58. Kay, RF, Molar structure and diet in extant Cercopithecoidea, in Development, Function and Evolution of Teeth, edited by Butler, PM; Joysey, K (1978), pp. 309-339, Academic Press
  59. Kay, RF; Hylander, WL, The dental structure of mammalian folivores wiht special reference to primates and Phalangeroidea (Marsupialia), in The Ecology of Arboreal Folivores, edited by Montgomery, GG (1978), pp. 173-191, Smithsonian Institution Press
  60. Kay, RF; Hiiemae, KM, Mastication in Galago crassicaudatus, a cinefluorographic and occlusal study, in Prosimian Biology, edited by Martin, RD; Doyle, GA; Walker, AC (1974), pp. 501-530, Duckworth
  61. Hiiemae, KM; Kay, RF, Evolutionary trends in the dynamics of primate mastication, in Symp. Fourth Int. Cong. Primatology, Vol 3: Craniofacial Biology of Primates, Symp. Fourth Int. Cong. Primatology, Vol 3: Craniofacial Biology of Primates, edited by Zingeser, MR, vol. 3 (1973), pp. 28-64, KARGER
  62. Hiiemae, KM; Kay, RF, Evolutionary trends in the dynamics of primate mastication., vol. 3 (1973), pp. 28-64

Refereed Publications

  1. Kay, RF; Gonzales, LA; Salenbien, W; Martinez, J-N; Cooke, SB; Valdivia, LA; Rigsby, C; Baker, PA, Parvimico materdei gen. et sp. nov.: A new platyrrhine from the Early Miocene of the Amazon Basin, Peru., Journal of Human Evolution, vol. 134 (September, 2019), pp. 102628 [doi]  [abs]
  2. Pampush, JD; Crowell, J; Karme, A; Macrae, SA; Kay, RF; Ungar, PS, Technical note: Comparing dental topography software using platyrrhine molars., American Journal of Physical Anthropology, vol. 169 no. 1 (May, 2019), pp. 179-185 [doi]  [abs]
  3. Spradley, JP; Glazer, BJ; Kay, RF, Mammalian faunas, ecological indices, and machine-learning regression for the purpose of paleoenvironment reconstruction in the Miocene of South America, Palaeogeography, Palaeoclimatology, Palaeoecology, vol. 518 (March, 2019), pp. 155-171 [doi]  [abs]
  4. Gonzales, LA; Malinzak, MD; Kay, RF, Intraspecific variation in semicircular canal morphology-A missing element in adaptive scenarios?, American Journal of Physical Anthropology, vol. 168 no. 1 (January, 2019), pp. 10-24 [doi]  [abs]
  5. Bhandari, A; Kay, RF; Williams, BA; Tiwari, BN; Bajpai, S; Hieronymus, T, Correction: First record of the Miocene hominoid Sivapithecus from Kutch, Gujarat state, western India., Plos One, vol. 14 no. 5 (January, 2019), pp. e0217960 [doi]  [abs]
  6. Kay, RF, Leonard B. Radinsky (1937–1985), Radical Biologist, Journal of Mammalian Evolution (January, 2019) [doi]  [abs]
  7. Pampush, JD; Spradley, JP; Morse, PE; Griffith, D; Gladman, JT; Gonzales, LA; Kay, RF, Adaptive wear-based changes in dental topography associated with atelid (Mammalia: Primates) diets, Biological Journal of the Linnean Society, vol. 124 no. 4 (August, 2018), pp. 584-606, Oxford University Press (OUP) [doi]  [abs]
  8. Kay, RF, 100 years of primate paleontology., American Journal of Physical Anthropology, vol. 165 no. 4 (April, 2018), pp. 652-676 [doi]
  9. Bhandari, A; Kay, RF; Williams, BA; Tiwari, BN; Bajpai, S; Hieronymus, T, First record of the Miocene hominoid Sivapithecus from Kutch, Gujarat state, western India., Plos One, vol. 13 no. 11 (January, 2018), pp. e0206314 [doi]  [abs]
  10. Spradley, JP; Pampush, JD; Morse, PE; Kay, RF, Smooth operator: The effects of different 3D mesh retriangulation protocols on the computation of Dirichlet normal energy., American Journal of Physical Anthropology, vol. 163 no. 1 (May, 2017), pp. 94-109 [doi]  [abs]
  11. Vizcaíno, S; De Iullis, G; Brinkman, P; Kay, R; Brinkman, D, ON AN ALBUM OF PHOTOGRAPHS RECORDING FOSSILS IN THE "OLD COLLECTIONS" OF THE MUSEO DE LA PLATA AND AMEGHINO?S PRIVATE COLLECTION AT THE BEGINNING OF THE XXTH CENTURY, Publicación Electrónica De La Asociación Paleontológica Argentina (2017), Asociacion Paleontologica Argentina [doi]
  12. Pampush, JD; Winchester, JM; Morse, PE; Vining, AQ; Boyer, DM; Kay, RF, Introducing molaR: a New R Package for Quantitative Topographic Analysis of Teeth (and Other Topographic Surfaces), Journal of Mammalian Evolution, vol. 23 no. 4 (December, 2016), pp. 397-412, Springer Nature [doi]  [abs]
  13. Pampush, JD; Spradley, JP; Morse, PE; Harrington, AR; Allen, KL; Boyer, DM; Kay, RF, Wear and its effects on dental topography measures in howling monkeys (Alouatta palliata)., American Journal of Physical Anthropology, vol. 161 no. 4 (December, 2016), pp. 705-721 [doi]  [abs]
  14. Fulwood, EL; Boyer, DM; Kay, RF, Stem members of Platyrrhini are distinct from catarrhines in at least one derived cranial feature., Journal of Human Evolution, vol. 100 (November, 2016), pp. 16-24 [doi]  [abs]
  15. Cuitiño, JI; Fernicola, JC; Kohn, MJ; Trayler, R; Naipauer, M; Bargo, MS; Kay, RF; Vizcaíno, SF, U-Pb geochronology of the Santa Cruz Formation (early Miocene) at the Río Bote and Río Santa Cruz (southernmost Patagonia, Argentina): Implications for the correlation of fossil vertebrate localities, Journal of South American Earth Sciences, vol. 70 (October, 2016), pp. 198-210, Elsevier BV [doi]  [abs]
  16. Boyer, DM; Kirk, EC; Silcox, MT; Gunnell, GF; Gilbert, CC; Yapuncich, GS; Allen, KL; Welch, E; Bloch, JI; Gonzales, LA; Kay, RF; Seiffert, ER, Internal carotid arterial canal size and scaling in Euarchonta: Re-assessing implications for arterial patency and phylogenetic relationships in early fossil primates., Journal of Human Evolution, vol. 97 (August, 2016), pp. 123-144 [doi]  [abs]
  17. Spradley, JP; Glander, KE; Kay, RF, Dust in the wind: How climate variables and volcanic dust affect rates of tooth wear in Central American howling monkeys., American Journal of Physical Anthropology, vol. 159 no. 2 (February, 2016), pp. 210-222, ISSN 0002-9483 [repository], [doi]  [abs]
  18. Raigemborn, MS; Matheos, SD; Krapovickas, V; Vizcaíno, SF; Bargo, MS; Kay, RF; Fernicola, JC; Zapata, L, Paleoenvironmental reconstruction of the coastal Monte Léon and Santa Cruz formations (Early Miocene) at Rincón del Buque, Southern Patagonia: A revisited locality, Journal of South American Earth Sciences, vol. 60 (July, 2015), pp. 31-55, Elsevier BV, ISSN 0895-9811 [repository], [doi]  [abs]
  19. Kay, RF, Anthropology. New World monkey origins., Science (New York, N.Y.), vol. 347 no. 6226 (March, 2015), pp. 1068-1069, ISSN 0036-8075 [repository], [doi]
  20. Boyer, DM; Winchester, J; Kay, RF, Erratum: The effect of differences in methodology among some recent applications of shearing quotients (American Journal of Physical Anthropology (2015) 156 (166-178)), American Journal of Physical Anthropology, vol. 157 no. 1 (January, 2015), pp. 178, WILEY, ISSN 0002-9483 [doi]
  21. Allen, KL; Cooke, SB; Gonzales, LA; Kay, RF, Dietary inference from upper and lower molar morphology in platyrrhine primates., Plos One, vol. 10 no. 3 (January, 2015), pp. e0118732 [repository], [doi]  [abs]
  22. Boyer, DM; Winchester, J; Kay, RF, The effect of differences in methodology among some recent applications of shearing quotients., American Journal of Physical Anthropology, vol. 156 no. 1 (January, 2015), pp. 166-178, ISSN 0002-9483 [repository], [doi]  [abs]
  23. Kay, RF, Biogeography in deep time - What do phylogenetics, geology, and paleoclimate tell us about early platyrrhine evolution?, Mol Phylogenet Evol, vol. 82 Pt B no. PB (January, 2015), pp. 358-374 [24333920], [doi]  [abs]
  24. Cuitiño JI, Fernicola JC, Kohn M, Naipauer M, Bargo MS, Kay RF, and Vizcaíno SF., U-Pb geochronology of the Santa Cruz Formation at the Santa Cruz and Bote rivers (southernmost Patagonia, Argentina) and its implications for the fossil vertebrate communities., South American Journal of Earth Sciences (2015 in review)
  25. Fulwood E, Boyer D, and Kay RF, Ontogenetic and Evolutionary Aspects of Pterion Contact in Platyrrhines, Journal of Human Evolution (2015 in revision)
  26. R.F. Kay, Science Perspectives: New World Monkey Origins, Science, vol. 347 (2015), pp. 1067-1068
  27. Perry, JMG; Kay, RF; Vizcaíno, SF; Bargo, MS, Oldest known cranium of a juvenile New World monkey (Early Miocene, Patagonia, Argentina): implications for the taxonomy and the molar eruption pattern of early platyrrhines., Journal of Human Evolution, vol. 74 (September, 2014), pp. 67-81, ISSN 0047-2484 [repository], [doi]  [abs]
  28. Boyer DM, Winchester JM, Kay RF, The effect of differences in methodology among some recent applications of shearing quotients, American Journal of Physical Anthropology, vol. 156 (July, 2014), pp. 166-178
  29. Forasiepi, AM; Sánchez-Villagra, MR; Schmelzle, T; Ladevèze, S; Kay, RF, An exceptionally well-preserved skeleton of Palaeothentes from the Early Miocene of Patagonia, Argentina: new insights into the anatomy of extinct paucituberculatan marsupials, Swiss Journal of Palaeontology, vol. 133 no. 1 (July, 2014), pp. 1-21, Springer Nature [doi]  [abs]
  30. Fernicola, JC; Cuitiño, JI; Vizcaíno, SF; Bargo, MS; Kay, RF, Fossil localities of the Santa Cruz Formation (Early Miocene, Patagonia, Argentina) prospected by Carlos Ameghino in 1887 revisited and the location of the Notohippidian, Journal of South American Earth Sciences, vol. 52 (January, 2014), pp. 94-107, Elsevier BV, ISSN 0895-9811 [repository], [doi]  [abs]
  31. Forasiepi, A. M. Sánchez-Vilagra, M. Schmelzle, T. Kay, R .F., An exceptionally preserved skeleton of Palaeothentes from the Miocene of Patagonia, Argentina: new insights on the anatomy of extinct paucituberculatan marsupials, Swiss Journal of Paleontology, vol. 133 (2014), pp. 1-21
  32. Patnaik, R; Milankumar Sharma, K; Mohan, L; Williams, BA; Kay, RF; Chatrath, P, Additional Vertebrate Remains from the Early Miocene of Kutch, Gujarat, Special Publication of the Paleontological Society of India, vol. 5 (2014), pp. 335-351 [repository]
  33. Fernicola, JC; Cuitiño, JI; Vizcaíno, SF; Bargo, MS; Kay, RF, Fossil Localities Of The Santa Cruz Formation (Lower Miocene, Patagonia, Argentina) Prospected By Carlos Ameghino In 1887. The Problem Of The Notohippidian Stage, South American Journal of Earth Sciences, vol. 52 (2014), pp. 94-107
  34. Malinzak, MD; Kay, RF; Hullar, TE, Locomotor head movements and semicircular canal morphology in primates., Proc Natl Acad Sci U S A, vol. 109 no. 44 (October, 2012), pp. 17914-17919 [23045679], [doi]  [abs]
  35. Kay, RF, Evidence for an Asian origin of stem anthropoids., Proceedings of the National Academy of Sciences of the United States of America, vol. 109 no. 26 (June, 2012), pp. 10132-10133 [22699505], [doi]
  36. Wilson, LAB; Madden, RH; Kay, RF; Sánchez-Villagra, MR, Testing a developmental model in the fossil record: Molar proportions in South American ungulates, Paleobiology, vol. 38 no. 2 (March, 2012), pp. 308-321, Cambridge University Press (CUP), ISSN 0094-8373 [repository], [doi]  [abs]
  37. Allen, KL; Kay, RF, Dietary quality and encephalization in platyrrhine primates., Proceedings of the Royal Society B: Biological Sciences, vol. 279 no. 1729 (February, 2012), pp. 715-721 [21831898], [doi]  [abs]
  38. Malinzak, ; Kay, MD; Hullar, RF; E, T, Predicting locomotion from the primate semicircular canal system, Proceedings of the National Academy (Usa), vol. 109 (2012), pp. 17914-17919
  39. Allen, K; Gonzales, L; Cooke, S; Kay, R, EVALUATION OF UPPER MOLAR OCCLUSAL MORPHOLOGY FOR DIETARY INFERENCE IN MID- TO LARGE-BODIED PLATYRRHINI (PRIMATES), Journal of Vertebrate Paleontology, vol. 31 (January, 2011), pp. 61-61, SOC VERTEBRATE PALEONTOLOGY, ISSN 0272-4634 [Gateway.cgi]
  40. Kay, R; Allen, K; Gonzales, L; Krueger, K, DIETARY RECONSTRUCTION OF ANTILLOTHRIX BERNENSIS, A HOLOCENE MONKEY FROM THE DOMINICAN REPUBLIC, Journal of Vertebrate Paleontology, vol. 31 (January, 2011), pp. 135-135, SOC VERTEBRATE PALEONTOLOGY
  41. Kay, RF; Hunt, KD; Beeker, CD; Conrad, GW; Johnson, CC; Keller, J, Preliminary notes on a newly discovered skull of the extinct monkey Antillothrix from Hispaniola and the origin of the Greater Antillean monkeys., Journal of Human Evolution, vol. 60 no. 1 (January, 2011), pp. 124-128, ISSN 0047-2484 [repository], [doi]
  42. Williams, BA; Kay, RF; Kirk, EC; Ross, CF, Darwinius masillae is a strepsirrhine--a reply to Franzen et al. (2009)., Journal of Human Evolution, vol. 59 no. 5 (November, 2010), pp. 567-573, ISSN 0047-2484 [doi]
  43. Coleman, MN; Kay, RF; Colbert, MW, Auditory morphology and hearing sensitivity in fossil New World monkeys., Anatomical Record (Hoboken, N.J. : 2007), vol. 293 no. 10 (October, 2010), pp. 1711-1721, ISSN 1932-8486 [doi]  [abs]
  44. Williams, BA; Kay, RF; Kirk, EC, New perspectives on anthropoid origins., Proceedings of the National Academy of Sciences of the United States of America, vol. 107 no. 11 (March, 2010), pp. 4797-4804 [20212104], [doi]  [abs]
  45. Vizcaíno, SF; Bargo, MS; Kay, RF; Fariña, RA; Di Giacomo, M; Perry, JMG; Prevosti, FJ; Toledo, N; Cassini, GH; Fernicola, JC, A baseline paleoecological study for the Santa Cruz Formation (late-early Miocene) at the Atlantic Coast of Patagonia, Argentina, Palaeogeography, Palaeoclimatology, Palaeoecology, vol. 292 no. 3-4 (January, 2010), pp. 507-519, Elsevier BV, ISSN 0031-0182 [doi]  [abs]
  46. Perry, JMG; Kay, RF; Vizcaíno, SF; Bargo, MS, Tooth root size, chewing muscle leverage, and the biology of Homunculus patagonicus (Primates) from the late early Miocene of Patagonia, Ameghiniana, vol. 47 no. 3 (January, 2010), pp. 355-371, Asociacion Paleontologica Argentina, ISSN 0002-7014 [doi]  [abs]
  47. Kay, RF; Fleagle, JG, Stem taxa, homoplasy, long lineages, and the phylogenetic position of Dolichocebus, Journal of Human Evolution, vol. 59 no. 2 (January, 2010), pp. 218-222, Elsevier BV, ISSN 0047-2484 [doi]
  48. Williams, BA; Kay, RF; Kirk, EC; Ross, C, Darwinius masillae is a European middle Eocene stem strepsirrhine., Journal of Human Evolution, vol. 59 no. 5 (2010), pp. 567-573, ISSN 0047-2484 [doi]
  49. Williams, BA; Kay, RF; Kirk, EC; Ross, C, Darwinius masillae is a European middle Eocene stem strepsirrhine—a reply to Franzen et al., Journal of Human Evolution, vol. 59 (2010), pp. 567-573
  50. Bargo, MS; Vizcaíno, SF; Kay, RF, Predominance of orthal masticatory movements in the early Miocene Eucholaeops (Mammalia, Xenarthra, Tardigrada, Megalonychidae) and other megatherioid sloths, Journal of Vertebrate Paleontology, vol. 29 no. 3 (December, 2009), pp. 870-880, Informa UK Limited, ISSN 0272-4634 [doi]  [abs]
  51. Kay, RF, Much Hype and Many Errors, Science (New York, N.Y.), vol. 325 no. 5944 (August, 2009), pp. 1074-1075, American Association for the Advancement of Science (AAAS), ISSN 0036-8075 [Gateway.cgi], [doi]
  52. Malinzak, MD; Kay, RF, Systematic characterization of locomotor head movements in Lemur catta, American Journal of Physical Anthropology, vol. Suppl. 48 (January, 2009), pp. 182-182, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  53. Kay, RF, Much hype and many errors, Science, vol. 21 (2009), pp. 1074-1075
  54. Krueger, KL; Scott, JR; Kay, RF; Ungar, PS, Technical note: Dental microwear textures of "Phase I" and "Phase II" facets., American Journal of Physical Anthropology, vol. 137 no. 4 (December, 2008), pp. 485-490, ISSN 0002-9483 [doi]  [abs]
  55. Bajpai, S; Kay, RF; Williams, BA; Das, DP; Kapur, VV; Tiwari, BN, The oldest Asian record of Anthropoidea., Proceedings of the National Academy of Sciences of the United States of America, vol. 105 no. 32 (August, 2008), pp. 11093-11098, ISSN 0027-8424 [doi]  [abs]
  56. Kay, RF; Fleagle, JG; Mitchell, TRT; Colbert, M; Bown, T; Powers, DW, The anatomy of Dolichocebus gaimanensis, a stem platyrrhine monkey from Argentina., Journal of Human Evolution, vol. 54 no. 3 (March, 2008), pp. 323-382, ISSN 0047-2484 [18001820], [doi]  [abs]
  57. Kay, RF; Vizcaíno, SF; Bargo, MS; Perry, JMG; Prevosti, FJ; Fernicola, JC, Two new fossil vertebrate localities in the Santa Cruz Formation (late early - early middle Miocene, Argentina), ∼51° South latitude, Journal of South American Earth Sciences, vol. 25 no. 2 (March, 2008), pp. 187-195, Elsevier BV, ISSN 0895-9811 [doi]  [abs]
  58. Goin, FJ; Sánchez-Villagra, MR; Abello, A; Kay, RF, A new generalized paucituberculatan marsupial from the oligocene of Bolivia and the origin of 'shrew-like' opossums, Palaeontology, vol. 50 no. 5 (September, 2007), pp. 1267-1276, WILEY, ISSN 0031-0239 [doi]  [abs]
  59. Goin, F; Abello, A; Bellosi, E; Kay, R; Madden, R; Carlini, A, South American metatherians from the begining of the neogene (Early Miocene, Colhuehuapan Land-mammal Age). Part 1: Introduction, didelphimorphia and sparassodonta, Ameghiniana, vol. 44 no. 1 (March, 2007), pp. 29-71, ISSN 0002-7014  [abs]
  60. Bajpai, S; Thewissen, JGM; Kay, RF; Colbert, M; Kaspur, V, An overview of terrestrial mammals from Cambay shale, Vastan lignite mine, Gujarat (western India), with new taxa and age constraints, Journal of Vertebrate Paleontology, vol. 27, Suppl to Issue 3 no. 3 (2007), pp. 42A-43A
  61. Coleman, M; Kay, RF, Evaluaing hearing sensitivity in Homunculus patagonicus, American Journal of Physical Anthropology, vol. 98 (2007), pp. 89
  62. Vizcaíno, SF; Bargo, MS; Kay, RF; Fernicola, JC; Prevosti, F; Toledo, JM; Perry, JGM; Madden, RH; Pomi, LH, Vertebrados de los niveles inferiores de la Formación Santa Cruz (Mioceno inferior-medio, Argentina), Ameghiniana, vol. Resumenes, XXIII Jornadas Argentinas de (2007), pp. 35
  63. Goin, FJ; Abello, A; Bellosi, E; Kay, RF; Madden, RH; Carlini, AA, Los Metatheria sudamericanos de comienzos del Neógeno (Mioceno temprano, Edad-mamífero Colhuehuapense). Parte 1: Introducción, Didelphimorphia y Sparassodonta, Ameghiniana, vol. 44 no. 1 (2007), pp. 29-71, ISSN 0002-7014  [abs]
  64. Forasiepi, AM; Sánchez-Villagra, MR; Goin, FJ; Takai, M; Shigehara, N; Kay, RF, A new species of Hathliacynidae (Metatheria, Sparassodonta) from the middle Miocene of Quebrada Honda, Bolivia, Journal of Vertebrate Paleontology, vol. 26 no. 3 (September, 2006), pp. 670-684, Informa UK Limited, ISSN 0272-4634 [doi]  [abs]
  65. Vizcaíno, SF; Bargo, MS; Kay, RF; Milne, N, The armadillos (Mammalia, Xenarthra, Dasypodidae) of the Santa Cruz Formation (early-middle Miocene): An approach to their paleobiology, Palaeogeography, Palaeoclimatology, Palaeoecology, vol. 237 no. 2-4 (August, 2006), pp. 255-269, Elsevier BV, ISSN 0031-0182 [doi]  [abs]
  66. Kay, RF; Cozzuol, MA, New platyrrhine monkeys from the Solimões Formation (late Miocene, Acre State, Brazil)., Journal of Human Evolution, vol. 50 no. 6 (June, 2006), pp. 673-686, ISSN 0047-2484 [16530809], [doi]  [abs]
  67. Tafforeau, P; Boistel, R; Boller, E; Bravin, A; Brunet, M; Chaimanee, Y; Cloetens, P; Feist, M; Hoszowska, J; Jaeger, JJ; Kay, RF; Lazzari, V; Marivaux, L; Nel, A; Nemoz, C; Thibault, X; Vignaud, P; Zabler, S, Applications of X-ray synchrotron microtomography for non-destructive 3D studies of paleontological specimens, Applied Physics A: Materials Science and Processing, vol. 83 no. 2 (May, 2006), pp. 195-202, Springer Nature, ISSN 0947-8396 [doi]  [abs]
  68. Fleagle, JG; Kay, RF, A new humerus of Homunculus from the Santa Cruz Formation, (early-middle Miocene, Patagonia)., Journal of Vertebrate Paleontology, vol. 26 (2006), pp. 62A
  69. Kay, RF; Cozzuol, M, A new platyrrhine from the Solimões Formation (late Miocene, Acre State, Brazil) with comments about other Miocene monkeys from that region., Journal of Human Evolution, vol. 50 no. 6 (2006), pp. 673-686, ISSN 0047-2484 [16530809], [doi]  [abs]
  70. Vizcaino, ; F, S; Bargo, ; S, M; Kay, ; F, R; Milne,, The armadillos (Mammalia, Xenarthra, Dasypodidae) of the Santa Cruz formation (early-middle Miocene), Palaeogeography, Palaeoclimatology and Paleoecology, vol. 237 (2006), pp. 255-269
  71. Kay, RF, A synopsis of the phylogeny and paleobiology of Amphipithecidae, South Asian middle and late Eocene primates, Anthropological Science, vol. 113 no. 1 (April, 2005), pp. 33-42, Anthropological Society of Nippon [doi]  [abs]
  72. Kay, RF; Vizcaino, S; Tauber, AA; Bargo, MS; Williams, BA; Luna, C; Colbert, MW, Three newly discovered skulls of Homunculus patagonicus support its position as a stem platyrrhine and establish its diurnal arboreal folivorous habits., American Journal of Physical Anthropology, vol. 40 (January, 2005), pp. 127-127, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  73. Kay, RF; Campbell, VM; Rossie, JB; Colbert, MW; Rowe, TB, Olfactory fossa of Tremacebus harringtoni (platyrrhini, early Miocene, Sacanana, Argentina): implications for activity pattern., The Anatomical Record. Part A, Discoveries in Molecular, Cellular, and Evolutionary Biology, vol. 281 no. 1 (November, 2004), pp. 1157-1172, ISSN 1552-4884 [15481092], [doi]  [abs]
  74. Kohn, MJ; Josef, JA; Madden, R; Kay, R; Vucetich, G; Carlini, AA, Climate stability across the Eocene-Oligocene transition, southern Argentina, Geology, vol. 32 no. 7 (July, 2004), pp. 621-624, Geological Society of America, ISSN 0091-7613 [doi]  [abs]
  75. Kay, RF; Schmitt, D; Vinyard, CJ; Perry, JMG; Shigehara, N; Takai, M; Egi, N, The paleobiology of Amphipithecidae, South Asian late Eocene primates., Journal of Human Evolution, vol. 46 no. 1 (January, 2004), pp. 3-25, ISSN 0047-2484 [14698683], [doi]  [abs]
  76. Bellosi, ES; Madden, R; Kay, RF, Discontinuidades estratigráficas de la Formación Sarmiento en Gran Barranca (Patagonia central): evaluación preliminary de la integridad de su registro, Resumenes De Comunicaciones De La Asociación Argentina De Paleontologia (Diamante, Argentina), vol. 2004 (2004), pp. 6-7
  77. Madden, R; Kay, RF; Heizler, M; Vilas, F; Re, G, Geochronology of the Sarmiento Formation at Gran Barranca and Elsewhere in Patagonia: Calibrating Middle Cenozoic Mammal Evolution in South America, Journal of Vertebrate Paleontology, vol. 24 (2004), pp. 87A
  78. Tauber, AA; Kay, RF; Luna, C, Killik Aike Norte, una localidad clásica de la Formación Santa Cruz (Mioceno temprano-medio), Patagonia, Argentina, Ameghiniana, vol. Resúmenes, 2004 (2004), pp. 26
  79. Tauber, AA; Kay, RF; Luna, C; Palacoos, ME, Aspectos paleoambientales de la Formacion Santa Cruz (Mioeno temprano-medio) en Killik Aike Norte, Patagonia, Argentina, Asociacion Paleontologica Argentina, Reunin Anual De Communicaciones (2004), pp. 26
  80. Tauber, AA; Vizcaino, SF; Kay, RF; Bargo, MS; Luna, C, Aspectos biostratigráficos y paleoecológicos de la Formación Santa Cruz (Mioceno temprano-medio) de Patagonia, Argentina, Ameghiniana (2004), Ameghiniana
  81. Vizcaino, SF; Bargo, MS; Tauber, AA; Kay, RF, The armadillos (Mammalia, Xenarthra) of the Santa Cruz Formation (Early-Middle Miocene). An approach to their paleobiology., Ameghiniana (2004), Ameghiniana
  82. Forasiepi, ; Sánchez-Villagra, A; Goin, MR; Madden, FJ; R, ; Takai, M; Kay, M; F, R, A new hathliacynidae (Metatheria, Sparassodonta) from the middle Miocene of Quebrada Honda, Bolivia, Journal of Vertebrate Paleontology (2004)
  83. Ungar, PS; Teaford, MF; Kay, RF, Molar micowear and shearing crest development in Miocene catarrhines, Anthropologie, vol. 42 (2004), pp. 21-35
  84. Kay, RF, A synopsis of the phylogeny and paleobiology of Amphipithecidae, South Asian middle and late Eocene primates, Anthropological Science (Japan), vol. 113 no. 1 (2004), pp. 1-12 [doi]  [abs]
  85. Kay, RF, The primate fossil record, American Journal of Human Biology : the Official Journal of the Human Biology Council, vol. 15 no. 6 (November, 2003), pp. 839-840, WILEY, ISSN 1042-0533 [Gateway.cgi], [doi]
  86. Jungers, WL; Pokempner, AA; Kay, RF; Cartmill, M, Hypoglossal canal size in living hominoids and the evolution of human speech., Human Biology, vol. 75 no. 4 (August, 2003), pp. 473-484  [abs]
  87. Goin, FJ; Sanchez-Villagra, MR; Kay, RF; Anaya-Daza, F; Takai, M, New Palaeothentid marsupial from the middle Miocene of Bolivia, Palaeontology, vol. 46 no. 2 (January, 2003), pp. 307-315, WILEY [doi]  [abs]
  88. Kay, RF; Mitchell, TRT, Cranial evidence for the timing of the catarrhine-platyrrhine divergence., Suppl. 35, American Journal of Physical Anthropology, vol. Suppl. 35 (2003), pp. 137
  89. Kirk, EC; Cartmill, M; Kay, RF; Lemelin, P, Primate origins and carpolestid relationships: not nailed yet. Comment on Block and Boyer, Science, vol. 300 (2003), pp. 471
  90. Bellosi, ES; Miquel, SE; Kay, RF; Madden, RH, A Mustersan Paleosol bearing land microgastropods (Charopidae) from the Sarmiento Formation, Eocene of Central Patagonia: Climatic implications, Ameghiniana, vol. 39 no. 4 (December, 2002), pp. 465-477, ISSN 0002-7014  [abs]
  91. Holroyd, PA; Ciochon, RL; Gunnell, GF; Kay, RF; Takai, M; Godinot, M, What's in a name? Family-group taxonomy of larger-bodied Southeast Asian Eocene primates., Journal of Human Evolution, vol. 43 no. 5 (November, 2002), pp. 755-758 [doi]
  92. Shigehara, N; Takai, M; Kay, RF; Aung, AK; Soe, AN; Tun, ST; Tsubamato, T; Thein, T, The upper dentition and face of Pondaungia cotteri from central Myanmar., Journal of Human Evolution, vol. 43 no. 2 (August, 2002), pp. 143-166, ISSN 0047-2484 [doi]  [abs]
  93. Kirk, EC; Kay, RF; Jungers, WL, Activity patterns of subfossil lemurs: evidence based on the relative size of the optic canal., Supplement 34, American Journal of Physical Anthropology, vol. 96 (January, 2002), pp. 96-96, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  94. Kay, RF; Schmitt, D; Vinyard, C, Pondaungia cotteri, a slow moving primate seed predator from the Eocene of South Asia, Supplement 34, American Journal of Physical Anthropology, vol. Supplement 34 (2002), pp. 92-93
  95. Bellosi, ES; Miquel, SE; Kay, RF; Madden, RH, A Mustersan Paleosol bearing land microgastropods (Charopidae) from the Sarmiento Formation, Eocene of Central Patagonia: Climatic implications, Ameghiniana, vol. 39 no. 4 (2002), pp. 465-477  [abs]
  96. Bellosi, ES; Miquel, SE; Kay, RF; Madden, RH, Un paleosuelo Mustersense con microgastrópodos terrestres (Charopidae) de la Formación Sarmiento, Eoceno de Patagonia central: significado paleoclimático, Ameghiniana, vol. 39 (2002), pp. 453-464
  97. Kay, RF; Madden, RH; Bellosi, ES; Carlini, AA; Heizler, M; Ré, G; Vilas, F; Vucetich, MG, Puesto Almendra-Colhue-Huapi contact at Gan Barranca, Sarmiento Formation, Chubut, Argentina, supplement, Ameghiniana, vol. 38 no. 4 (2001), pp. 35R
  98. Kay, RF; Madden, RH; Carlini, AA; Bellosi, ES; Heizler, M; Ré, G; Vilas, F; Vucetich, MG, The Mustersan interval at Gran Barranca, supplement, Ameghiniana, vol. 38 no. 4 (2001), pp. 34R
  99. Williams, SH; Kay, RF, A comparative test of adaptive explanations for hypsodonty in ungulates and rodents, Journal of Mammalian Evolution, vol. 8 no. 3 (2001), pp. 207-229, ISSN 1064-7554  [abs]
  100. Kay, RF; Kirk, EC, Osteological evidence for the evolution of activity pattern and visual acuity in primates., American Journal of Physical Anthropology, vol. 113 no. 2 (October, 2000), pp. 235-262, ISSN 0002-9483 [11002207], [doi]  [abs]
  101. Sanchez-Villagra, MR; Burnham, RJ; Campbell, DC; Feldmann, RM; Gaffney, ES; Kay, RF; Lozsan, R; Purdy, R; Thewissen, JGM, A new near-shore marine fauna and flora from the early neogene of northwestern Venezuela, Journal of Paleontology, vol. 74 no. 5 (January, 2000), pp. 957-968, Cambridge University Press (CUP) [doi]  [abs]
  102. Sänchez-Villagra, MR; Kay, RF; Anaya-Daza, F, Cranial anatomy and palaeobiology of the Miocene marsupial Hondalagus altiplanensis and a phylogeny of Argyrolagids, Palaeontology, vol. 43 no. 2 (January, 2000), pp. 287-301, WILEY, ISSN 0031-0239 [doi]  [abs]
  103. Kay, RF, Review of Adaptive Radiations of Neotropical Primates, edited by M. A. Norconk, A. L. Rosenberger, and P. A. Garber, International Journal of Primatology, vol. 21 (2000), pp. 325-327
  104. Kay, RF; Kirk, EC, Ostological evidence for the evolution of activity pattern and visual acuity in primates, American Journal of Physical Anthropology, vol. 113 (2000), pp. 235-262
  105. Kay, RF; Madden, RH; Vucetich, MG; Carlini, AA; Mazzoni, MM; Re, GH; Heizler, M; Sandeman, H, Revised geochronology of the Casamayoran South American Land Mammal Age: climatic and biotic implications., Proceedings of the National Academy of Sciences of the United States of America, vol. 96 no. 23 (November, 1999), pp. 13235-13240, ISSN 0027-8424 [10557304], [doi]  [abs]
  106. Kay, RF; Madden, RH; Mazzoni, M; Vucetich, MG; Re, G; Heizler, M; Sandeman, H, The oldest Argentine primates: first age determinations for the Colhuehuapian South American Land Mammal 'Age'., Supplement 28, American Journal of Physical Anthropology (January, 1999), pp. 166-166, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  107. Carlini, AA; Vucetich, MG; Mazzoni, M; Zucol, A; Ré, GH; Vilas, JFA; Kay, RF; Madden, RH; Heizler, M, Implications of the late Eocene age of the casamayoran fauna at Gran Barranca, Patagonia., Journal of Vertebrate Paleontology, vol. 19, Suppl to #3 (1999), pp. 35A
  108. Kay, RF; Johnson, DJ; Meldrum, DJ, Proteropithecia, new name for Propithecia Kay, Johnson and Meldrum, 1998 non Vojnits 1985, American Journal of Primatology, vol. 47 (1999), pp. 347
  109. Williams, SH; Kay, RF, A comparative test of competing adaptive explanations for hypsodonty in ungulates and rodents, Programa y Resúmenes, Evolución Neotropical del Cenozoico,La Paz, Bolivia, Programa Y Resúmenes, Evolución Neotropical Del Cenozoico,La Paz, Bolivia (1999), pp. 46
  110. Zack, S; Kay, RF; Madden, RH, New notoungulates from the Paleogene at Vilcapujio, Bolivia, Journal of Vertebrate Paleontology, vol. 19, Suppl to #3 (1999), pp. 86A
  111. Kay, RFD; Johnson, D; Meldrum, DJ, Erratum: A new pitheciin primate from the middle Miocene of Argentina (American Journal of Primatology (1998) 45 (317-336)), American Journal of Primatology, vol. 47 no. 4 (1999), pp. 347-, WILEY [doi]
  112. Kay, RF; Johnson, DJ; Meldrum, DJ, Proteropithecia, new name for Propithecia, American Juurnal of Primatology, vol. 47 (1999), pp. 347 (1998 non Vojnits 1985.)
  113. Ross, C; Williams, B; Kay, RF, Phylogenetic analysis of anthropoid relationships., Journal of Human Evolution, vol. 35 no. 3 (September, 1998), pp. 221-306, ISSN 0047-2484 [doi]  [abs]
  114. Kay, RF; Cartmill, M; Balow, M, The hypoglossal canal and the origin of human vocal behavior., Proceedings of the National Academy of Sciences of the United States of America, vol. 95 no. 9 (April, 1998), pp. 5417-5419, ISSN 0027-8424 [9560291], [doi]  [abs]
  115. Kay, RF; Macfadden, BJ; Madden, RH; Sandeman, H; Anaya, F, Revised age of the salla beds, Bolivia, and its bearing on the age of the deseadan South American land mammal “age”, Journal of Vertebrate Paleontology, vol. 18 no. 1 (January, 1998), pp. 189-199, Informa UK Limited [doi]  [abs]
  116. Kay, RF; Johnson, D; Meldrum, DJ, A new pitheciin primate from the middle Miocene of Argentina., American Journal of Primatology, vol. 45 no. 4 (January, 1998), pp. 317-336, ISSN 0275-2565 [9702279], [doi]  [abs]
  117. Gonzalez, WG; Kay, RF; Kirk, EC, Optic canal and orbit size-- implications for the origins of diurnality and visual acuity in primates, American Journal of Physical Anthropology, vol. Suppl 26 (1998), pp. 87
  118. Kay, RF; Cartmill, M; Balow, M, The hypoglossal canal and the origins of human vocal behavior, American Journal of Physical Anthropology, vol. Suppl. 26 (1998), pp. 137
  119. Kay, RF; Ross, C; Williams, BA; Johnson, D, Cladistic analysis and anthropoid origins - Response, Science (New York, N.Y.), vol. 278 no. 5346 (December, 1997), pp. 2135-2136, AMER ASSOC ADVANCEMENT SCIENCE, ISSN 0036-8075 [Gateway.cgi]
  120. Kay, RF; Madden, RH; Van Schaik, C; Higdon, D, Primate species richness is determined by plant productivity: implications for conservation., Proceedings of the National Academy of Sciences of the United States of America, vol. 94 no. 24 (November, 1997), pp. 13023-13027, ISSN 0027-8424 [9371793], [doi]  [abs]
  121. Meldrum, DJ; Kay, RF, Nuciruptor rubricae, a new pitheciin seed predator from the Miocene of Colombia., American Journal of Physical Anthropology, vol. 102 no. 3 (March, 1997), pp. 407-427, ISSN 0002-9483 [doi]  [abs]
  122. Kay, RF; Ross, C; Williams, BA, Anthropoid origins., Science (New York, N.Y.), vol. 275 no. 5301 (February, 1997), pp. 797-804, ISSN 0036-8075 [9012340], [doi]  [abs]
  123. Kay, RF; Madden, RH, Mammals and rainfall: paleoecology of the middle Miocene at La Venta (Colombia, South America)., Journal of Human Evolution, vol. 32 no. 2-3 (February, 1997), pp. 161-199, ISSN 0047-2484 [9061556], [doi]  [abs]
  124. Sánchez-Villagra, MR; Kay, RF, A skull of proargyrolagus, the oldest argyrolagid (late oligocene salla beds, bolivia), with brief comments concerning its paleobiology, Journal of Vertebrate Paleontology, vol. 17 no. 4 (January, 1997), pp. 717-724, Informa UK Limited [doi]  [abs]
  125. Allmendinger, RW; Jordan, TE; Kay, SM; Isacks, BL, The evolution of the Altiplano-Puna Plateau of the central Andes, Annual Review of Earth and Planetary Sciences, vol. 25 (1997), pp. 139-174
  126. Melrum, DJ; Kay, RF, Erratum: Nuciruptor rubicae, a new pitheciin seed predator from the miocene of Colombia (American Journal of Physical Anthropology (1997) 102 (407-427)), American Journal of Physical Anthropology, vol. 104 no. 1 (1997), pp. 153-, WILEY [doi]
  127. Kay, RF; Ross, C; Williams, BA; Johnson, D, Cladistic analysis and Anthropoid Origins, reply to Block et al., Science, vol. 278 no. 5346 (1997), pp. 2135-2136, ISSN 0036-8075 [Gateway.cgi]
  128. Sánchez-Vittagra, MR; Kay, RF, Do phalangeriforms (Marsupialia: Diprotodontia) have a 'hypocone'?, Australian Journal of Zoology, vol. 44 no. 5 (December, 1996), pp. 461-467, CSIRO PUBLISHING [doi]  [abs]
  129. Kay, RF, Colobine monkeys. Their ecology, behavior and evolution - Davies,AG, Gates,JF, Science (New York, N.Y.), vol. 271 no. 5246 (January, 1996), pp. 156-157, AMER ASSOC ADVANCEMENT SCIENCE, ISSN 0036-8075 [Gateway.cgi]
  130. Carlini, A.A., R.H. Madden, G. López, R.F. Kay, M.G. Vucetich, M. Bond, T. Jordan,, Nuevos mamíferos de la Formación Chinches (Mioceno) de la Cordillera Frontal de San Juan, Argentina, XIII Jornadas Argeninas de Paleontologia de Vertebrados, Resumenes, Resúmenes, Xii Jornadas Argentinas De Paleontología De Vertebrados (La Pampa, May 1996) (1996)
  131. Teaford, MF; Ungar, PS; Kay, RF; Leakey, MG, The evolution of diet in Old World monkeys, American Journal of Physical Anthropology, vol. Suppl. 22 (1996), pp. 227
  132. Kay, RF, Review of Colobine Monkeys. Their ecology, behavior and evolution by A.G. Davies and J.F. Oates, Science, vol. 271 (1996), pp. 156-157
  133. Ungar, PS; Kay, RF, The dietary adaptations of European Miocene catarrhines., Proceedings of the National Academy of Sciences of the United States of America, vol. 92 no. 12 (June, 1995), pp. 5479-5481, ISSN 0027-8424 [7777533], [doi]  [abs]
  134. Sanchez-Villagra, MR; Kay, RF, A SKULL OF PROARGYROLAGUS. THE OLDEST ARGYROLAGID (EARLY MIOCENE SALLA BEDS, BOLIVIA), Journal of Vertebrate Paleontology, vol. 15 (January, 1995), pp. 51A-52A, TAYLOR & FRANCIS INC, ISSN 0272-4634 [Gateway.cgi]
  135. Kay, RF; MacFadden, BJ; Madden, RH; Anaya, F; Farrar, E, NEW RADIOMETRIC DATES CONFIRM LATE OLIGOCENE AGE OF DESEADAN SALLA BEDS, BOLIVIA AND THE OLDEST KNOWN SOUTH AMERICAN PRIMATE, Journal of Vertebrate Paleontology, vol. 15 (January, 1995), pp. 38A-38A, TAYLOR & FRANCIS INC, ISSN 0272-4634 [Gateway.cgi]
  136. Ungar, PS; Kay, RF, Molar Shear and dietary adaptations of European Miocene catarrhines, American Journal of Physical Anthropology, vol. Suppl. 20 (1995), pp. 214
  137. Kay, RF, "Giant" tamarin from the Miocene of Colombia., American Journal of Physical Anthropology, vol. 95 no. 3 (November, 1994), pp. 333-353, ISSN 0002-9483 [7856767], [doi]  [abs]
  138. Williams, BA; Kay, RF, The taxon anthropoidea and the crown clade concept, Evolutionary Anthropology, vol. 3 no. 6 (January, 1994), pp. 188-190, WILEY [doi]
  139. Kay, RF; Madden, RH, An overview of the paleogeography and paleoecology of the La Venta region, American Journal of Physical Anthropology, vol. Suppl. 18 (1994), pp. 120
  140. Kay, RF; Williams, BA, Cladistics, computers, and character analysis., Evolutionary Anthropology, vol. 3 (1994), pp. 32-35
  141. Kay, RF, "Giant" Tamarin from the Miocene of Colombia, American Journal of Physcial Anthropology, vol. 13 no. 3 (1994), pp. 34-48, ISSN 0002-9483 [7856767], [doi]  [abs]
  142. Kay, RF; Frailey, CD, Fossil platyrrhines from the Rio Acre local fauna, late Miocene, western Amazonia, Journal of Human Evolution, vol. 25 no. 4 (December, 1993), pp. 319-327 [doi]  [abs]
  143. Anthony, MRL; Kay, RF, Tooth form and diet in ateline and alouattine primates: reflections on the comparative method, American Journal of Science, vol. 293 A no. A (January, 1993), pp. 356-382, American Journal of Science (AJS) [doi]  [abs]
  144. Kay, RF; Frailey, CD, Large fossil platyrrhines from the Rio Acre local fauna, late Miocene, western Amazonia, Journal of Human Evolution, vol. 25 no. 4 (January, 1993), pp. 319-327, Elsevier BV [doi]  [abs]
  145. Anthony, M.R.L. and R.F. Kay, Tooth form and diet in ateline and alouattine primates: reflections on the comparative method, American Journal of Physical Anthropology, vol. 283A (1993), pp. 356-382
  146. Kay, RF; Madden, RH; Vucetich, MG; Cifelli, RL; Mazzoni, MM; III, CCS, Vertebrate paleontology in the Eocene of Bolivia and the Deseadan of Argentina, Journal of Vertebrate Paleontology, vol. 13 no. 3 (1993), pp. 44A
  147. Kay, RF; Thewissen, JGM; Yoder, AD, Cranial anatomy of Ignacius graybullianus and the affinities of the Plesiadapiformes, American Journal of Physical Anthropology, vol. 89 no. 4 (January, 1992), pp. 477-498, WILEY, ISSN 0002-9483 [doi]  [abs]
  148. Meldrum, DJ; Kay, RF, A new specimen of pitheciine primate from the Miocene of Colombia, American Journal of Physical Anthropology, vol. Supplement 14 (1992), pp. 121
  149. Kay, RF, Primate phylogeny. Edited by F.E. Grine, J.G. Fleagle, and L.B. Martin. London: Academic Press. 1987. iii + 146 pp., tables, figures, $7.95 (paper), American Journal of Physical Anthropology, vol. 84 no. 1 (January, 1991), pp. 109-111, WILEY, ISSN 0002-9483 [Gateway.cgi], [doi]
  150. Kay, RF, Review of Primate Phylogeny by F.E. Grine, J.G. Fleagle and L.B. Martin, American Journal of Physical Anthropology, vol. 84 (1991), pp. 109-111
  151. Madden, RH; Kay, RF, The Friasian of Patagonia, Journal of Vertebrate Paleontology, vol. 11 no. 3 (1991), pp. 44A
  152. Kay, RF; Anthony, MRL, Tooth form and diet in ateline and alouattine primates: reflections on the comparative method, Journal of Vertebrate Paleontology, vol. 11 (1991), pp. 39A
  153. Meldrum, DJ; Fleagle, JG; Kay, RF, Partial humeri of two Miocene Colombian primates., American Journal of Physical Anthropology, vol. 81 no. 3 (March, 1990), pp. 413-422 [doi]  [abs]
  154. MELDRUM, DJ; KAY, RF, A NEW PARTIAL SKELETON OF CEBUPITHECIA-SARMIENTOI FROM THE MIOCENE OF COLOMBIA, American Journal of Physical Anthropology, vol. 81 no. 2 (February, 1990), pp. 267-267, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  155. Kay, RF, The phyletic relationships of extant and fossil Pitheciinae (Platyrrhini, Anthropoidea), Journal of Human Evolution, vol. 19 no. 1-2 (January, 1990), pp. 175-208, Elsevier BV, ISSN 0047-2484 [doi]  [abs]
  156. Kay, RF; Thorington, RW; Houde, P, Eocene plesiadapiform shows affinities with flying lemurs not primates, Nature, vol. 345 no. 6273 (January, 1990), pp. 342-344, Springer Nature, ISSN 0028-0836 [doi]  [abs]
  157. Kay, ; F, R; Madden, RH; D, JG, Nuevos hallazgos de monos del Mioceno de Colombia, Ameghiniana, vol. 25 (1990), pp. 203-213
  158. FLEAGLE, JG; KAY, RF, THE DENTAL MORPHOLOGY OF DOLICHOCEBUS-GAIMANENSIS, A FOSSIL MONKEY FROM ARGENTINA, American Journal of Physical Anthropology, vol. 78 no. 2 (February, 1989), pp. 221-221, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  159. KAY, RF, A NEW SMALL PLATYRRHINE FROM THE MIOCENE OF COLOMBIA AND THE PHYLETIC POSITION OF THE CALLITRICHINES, American Journal of Physical Anthropology, vol. 78 no. 2 (February, 1989), pp. 251-251, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  160. MADDEN, RH; KAY, RF; GUERRERO, J, NEW STIRTONIA-VICTORIAE MATERIAL FROM THE MIOCENE OF COLOMBIA, American Journal of Physical Anthropology, vol. 78 no. 2 (February, 1989), pp. 265-265, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  161. Kay, RF, A new small platyrrhine from the Miocene of Colombia and the phyletic position of the callitrichines, American Journal of Physical Anthropology, vol. 78 (1989), pp. 151
  162. Kay, RF, Review of Primate Adaptation and Evolution by J.G. Fleagle, Quarterly Review of Biology, vol. 64 (1989), pp. 344
  163. Kay, RF, A new "giant" tamarin from the Miocene of Colombia, Journal of Vertebrate Paleontology, vol. 9 no. 3 (1989), pp. 28A
  164. Madden, RH; Kay, RF; Lundberg, JF; Scillato-Yane, G, Vertebrate paleontology, stratigraphy, and biochronology of the Miocene of southern Ecuador, Journal of Vertebrate Paleontology, vol. 9 no. 3 (1989), pp. 31A
  165. Kay, RF; Plavcan, JM; Glander, KE; Wright, PC, Sexual selection and canine dimorphism in New World monkeys., American Journal of Physical Anthropology, vol. 77 no. 3 (November, 1988), pp. 385-397, ISSN 0002-9483 [3228171], [doi]  [abs]
  166. Plavcan, JM; Kay, RF, Sexual dimorphism and dental variability in platyrrhine primates, International Journal of Primatology, vol. 9 no. 3 (June, 1988), pp. 169-178, Springer Nature, ISSN 0164-0291 [doi]  [abs]
  167. Grine, FE; Kay, RF, Early hominid diets from quantitative image analysis of dental microwear., Nature, vol. 333 no. 6175 (June, 1988), pp. 765-768, ISSN 0028-0836 [doi]  [abs]
  168. KAY, RF; FLEAGLE, JG, THE PHYLOGENETIC POSITION OF PARAPITHECIDAE (PRIMATES, ANTHROPOIDEA), American Journal of Physical Anthropology, vol. 75 no. 2 (February, 1988), pp. 230-230, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  169. Simons, EL; Kay, RF, New material of Qatrania from Egypt with comments on the phylogenetic position of the parapithecidae (primates, Anthropoidea), American Journal of Primatology, vol. 15 no. 4 (January, 1988), pp. 337-347, WILEY, ISSN 0275-2565 [Gateway.cgi], [doi]  [abs]
  170. Kay, RF; Cant, JGH, Age assessment using cementum annulus counts and tooth wear in a free‐ranging population of Macaca mulatta, American Journal of Primatology, vol. 15 no. 1 (January, 1988), pp. 1-15, WILEY [doi]  [abs]
  171. Kay, RF, Phyletic Position of the Pitheciinae, Journal of Vertebrate Paleontology, vol. 8 (Suppl. 3) (1988), pp. 19a
  172. Madden, RH; Kay, RF; Lundberg, JG; Cifelli, RL; Guerrero, J, Informe general de nuevos descubrimientos en el Mioceno de Colombia y Chile, V. Journadas Arg. Paleont. Vert. (1988)
  173. Kay, RF, Analysis of primate dental microwear using image processing techniques., Scanning Microscopy, vol. 1 no. 2 (June, 1987), pp. 657-662  [abs]
  174. PLAVCAN, JM; KAY, RF; ALBRECHT, GH, SEXUAL DIMORPHISM AND DENTAL VARIABILITY AMONG EXTANT PLATYRRHINES, American Journal of Physical Anthropology, vol. 72 no. 2 (February, 1987), pp. 243-243, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  175. KAY, RF; PLAVCAN, JM; WRIGHT, PC; GLANDER, KE; ALBRECHT, GH, BEHAVIORAL AND SIZE CORRELATES OF CANINE DIMORPHISM IN PLATYRRHINE PRIMATES, American Journal of Physical Anthropology, vol. 72 no. 2 (February, 1987), pp. 218-218, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  176. Kay, RF; Madden, RH; Plavcan, JM; Cifelli, RL; Díaz, JG, Stirtonia victoriae, a new species of Miocene Colombian primate, Journal of Human Evolution, vol. 16 no. 2 (January, 1987), pp. 173-196, Elsevier BV, ISSN 0047-2484 [doi]  [abs]
  177. Fleagle, JG; Kay, RF, The phyletic position of the Parapithecidae, Journal of Human Evolution, vol. 16 no. 6 (January, 1987), pp. 483-532, Elsevier BV, ISSN 0047-2484 [doi]  [abs]
  178. Kay, RF, Major Topics in Primate and Human Evolution, edited by B. Wood, L. Martin and P. Andrews, review, American Scientist, vol. 75 (1987), pp. 312
  179. Kay, RF, Review of Sexual Dimorphism in Living and Fossil Primates, edited by M. Pickford and B. Chiarelli, International Journal of Primatology, vol. 8 (1987), pp. 93-95
  180. Kay, RF, Primate Evolution, edited by J.G. Else and P.C. Lee, Quarterly Review of Biology, vol. 62 (1987), pp. 451
  181. KAY, RF; MADDEN, RM; CIFELLI, RL; DIAZ, JG, A NEW SPECIMEN OF MIOCENE COLOMBIAN STIRTONIA, American Journal of Physical Anthropology, vol. 69 no. 2 (February, 1986), pp. 221-221, WILEY-BLACKWELL, ISSN 0002-9483 [Gateway.cgi]
  182. Luchterhand, K; Kay, RF; Madden, RH, ( Mohanamico herskovitzi gen. et sp. nov., a middle Miocene South American primate)., Comptes Rendus Academie Des Sciences, Series Ii, vol. 303 no. 19 (January, 1986), pp. 1753-1758  [abs]
  183. Lundberg, JG; Machado-Allison, A; Kay, RF, Miocene characid fishes from Colombia: Evolutionary stasis and extirpation, Science (New York, N.Y.), vol. 234 no. 4773 (January, 1986), pp. 205-208, ISSN 0036-8075 [doi]  [abs]
  184. Kay, CN; Scapino, RP; Kay, ED, A cinephotographic study of the role of the canine in limiting lateral jaw movements in Macaca fascicularis, Journal of Dental Research, vol. 65 (1986), pp. 1300-1302
  185. Luchterhand, K; Kay, RF; Madden, RH, Mohanamico hershkovitzi, gen. et sp. nov., un primate du Miocène moyen d'Amérique du Sud, Comptes Rendus, Adademie Des Sciences (Paris), vol. 303 no. II (1986), pp. 1753-1758
  186. KAY, RF; CANT, JGH, CEMENTUM ANNULUS COUNTS AND CHRONOLOGICAL AGE IN MACACA-MULATTA, American Journal of Physical Anthropology, vol. 66 no. 2 (January, 1985), pp. 188-188, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  187. Kay, RF, Dental evidence for the diet of Australopithecus., Annual Review of Anthropology. Vol. 14, vol. 14 no. 1 (January, 1985), pp. 315-341, ANNUAL REVIEWS [doi]  [abs]
  188. Kay, RF, Review of A Complete Guide to the Monkeys, Apes and Other Primates by M. Kavanagh, Quarterly Review of Biology, vol. 60 (1985), pp. 231
  189. ALBRECHT, GH; KAY, RF, PORTABLE MICROCOMPUTERS, ELECTRONIC DIGITAL CALIPERS, AND THE COLLECTION OF MORPHOMETRIC DATA, American Journal of Physical Anthropology, vol. 63 no. 2 (January, 1984), pp. 133-134, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  190. Kay, RF; Rasmussen, DT; Beard, KC, Cementum annulus counts provide a means for age determination in Macaca mulatta (primates, anthropoidea)., Folia Primatologica, vol. 42 no. 2 (January, 1984), pp. 85-95 [doi]  [abs]
  191. Kay, RF, The Order of Man by Charles Oxnard, review, Quarterly Review of Biology, vol. 59 (1984), pp. 480-481
  192. Kay, RF; Rasmussen, DT; Beard, KC, Cementum annulus counts provide a mean for age determination in Macaca mulatta, Folia Primatologica, vol. 42 no. 2 (1984), pp. 85-95  [abs]
  193. Simons, EL; Kay, RF, Qatrania, new basal anthropoid primate from the Fayum, Oligocene of Egypt, Nature, vol. 304 no. 5927 (December, 1983), pp. 624-626, Springer Nature, ISSN 0028-0836 [doi]  [abs]
  194. Kay, RF; Simons, EL, Dental formulae and dental eruption patterns in Parapithecidae (Primates, Anthropoidea)., American Journal of Physical Anthropology, vol. 62 no. 4 (December, 1983), pp. 363-375 [doi]  [abs]
  195. Kay, RF; Covert, HH, True grit: a microwear experiment., American Journal of Physical Anthropology, vol. 61 no. 1 (May, 1983), pp. 33-38 [doi]  [abs]
  196. Kay, RF, RAMAPITHECUS RECLAIMED, The Sciences, vol. 23 no. 1 (January, 1983), pp. 26-27, WILEY, ISSN 0036-861X [Gateway.cgi], [doi]
  197. Kay, RF, Sivapithecus simonsi, a new species of miocene hominoid, with comments on the phylogenetic status of the ramapithecinae, International Journal of Primatology, vol. 3 no. 2 (June, 1982), pp. 113-173, Springer Nature, ISSN 0164-0291 [doi]  [abs]
  198. Sheine, WS; Kay, RF, A model for comparison of masticatory effectiveness in primates., Journal of Morphology, vol. 172 no. 2 (May, 1982), pp. 139-149 [doi]  [abs]
  199. Kay, RF, Sexual dimorphism in Ramapithecinae., Procedings of the National Academy (USA), Proceedings of the National Academy of Sciences of the United States of America, vol. 79 no. 2 (January, 1982), pp. 209-212, ISSN 0027-8424 [16593143], [doi]  [abs]
  200. Kay, RF, Advances in San Juan Basin Paleontology by Lucas, et al., an review, American Scientist, vol. 70 (1982), pp. 318
  201. Kay, RF; Cartmill, M; MacPhee, RDE, Habitus and heritage in archaic primates (Plesiadapiformes), International Journal of Primatology, vol. 3 (1982), pp. 302
  202. Fleagle, JG; Kay, RF; Simons, EL, Sexual dimorphism in early anthropoids: response to Leutenegger, Naure, vol. 290 (December, 1981), pp. 609
  203. Covert, HH; Kay, RF, Dental microwear and diet: implications for determining the feeding behaviors of extinct primates, with a comment on the dietary pattern of Sivapithecus., American Journal of Physical Anthropology, vol. 55 no. 3 (July, 1981), pp. 331-336 [doi]  [abs]
  204. Kay, RF, The ontogeny of premolar dental wear in Cercocebus albigena (cercopithecidae), American Journal of Physical Anthropology, vol. 54 no. 1 (January, 1981), pp. 153-155, WILEY [doi]  [abs]
  205. Kay, RF, The nut‐crackers – a new theory of the adaptations of the Ramapithecinae, American Journal of Physical Anthropology, vol. 55 no. 2 (January, 1981), pp. 141-151, WILEY [doi]  [abs]
  206. Kay, RF; Fleagle, JG; Simons, EL, A revision of the Oligocene apes of the Fayum Province, Egypt, American Journal of Physical Anthropology, vol. 55 no. 3 (January, 1981), pp. 293-322, WILEY [doi]  [abs]
  207. Fleagle, JG; Kay, RF; Simons, EL, Sexual dimorphism in early anthropoids., Nature, vol. 287 no. 5780 (September, 1980), pp. 328-330, Springer Nature, ISSN 0028-0836 [doi]  [abs]
  208. Kay, RF; Simons, EL, The ecology of oligocene African anthropoidea, International Journal of Primatology, vol. 1 no. 1 (March, 1980), pp. 21-37, Springer Nature, ISSN 0164-0291 [doi]  [abs]
  209. COVERT, HH; KAY, RF, DENTAL MICROWEAR AND DIET - IMPLICATIONS FOR EARLY HOMINID FEEDING-BEHAVIOR, American Journal of Physical Anthropology, vol. 52 no. 2 (January, 1980), pp. 216-216, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  210. Kay, RF; Simons, EL, Comments on the adaptive strategy of the first African anthropoids., Zeitschrift Fur Morphologie Und Anthropologie, vol. 71 no. 2 (January, 1980), pp. 143-148
  211. SIMONS, EL; KAY, RF, DAWN APE PROVIDES CLUE TO SOCIAL-LIFE, Geotimes, vol. 25 no. 5 (January, 1980), pp. 18-18, AMER GEOLOGICAL INST, ISSN 0016-8556 [Gateway.cgi]
  212. Kay, R.F. and E.L. Simons, Comments on the adaptive strategy of the first African Anthropoidea, Zeitschrift fur Morphologie und Anthropologie, vol. 71 (1980), pp. 143-148
  213. Kay, RF, Documenting our antecedents--A review of F. Szalay and E. Delson's book: Evolutionary History of the Primates, Paleobiology, vol. 6 (1980), pp. 517-520
  214. Kay, RF, : Analysis of Species-Specific Molar Adaptations in Strepsirhine Primates . Daniel Seligsohn., American Anthropologist, vol. 81 no. 4 (December, 1979), pp. 970-971, WILEY, ISSN 0002-7294 [Gateway.cgi], [doi]
  215. KAY, RF; SIMONS, EL, ECOLOGY OF OLIGOCENE AFRICAN ANTHROPOIDEA, American Journal of Physical Anthropology, vol. 50 no. 3 (January, 1979), pp. 453-453, WILEY-LISS
  216. Kay, RF; Sheine, WS, On the relationship between chitin particle size and digestibility in the primate Galago senegalensis, American Journal of Physical Anthropology, vol. 50 no. 3 (January, 1979), pp. 301-308 [doi]  [abs]
  217. Kay, RF; Sussman, RW; Tattersall, I, Dietary and dental variations in the genus Lemur, with comments concerning dietary-dental correlations among Malagasy primates., American Journal of Physical Anthropology, vol. 49 no. 1 (July, 1978), pp. 119-127 [doi]  [abs]
  218. Kay, RF; Sheine, WS, A model for the comparison of mastication efficiency in primates, American Journal of Physical Anthropology, vol. 48 (1978), pp. 110-111
  219. Kay, RF, Diets of early Miocene African hominoids, Nature, vol. 268 no. 5621 (December, 1977), pp. 628-630, Springer Nature [doi]  [abs]
  220. Kay, RF, The evolution of molar occlusion in the Cercopithecidae and early Catarrhines., American Journal of Physical Anthropology, vol. 46 no. 2 (March, 1977), pp. 327-352 [doi]  [abs]
  221. Sheine, WS; Kay, RF, An analysis of chewed food particle size and its relationship to molar structure in the primatesCheirogaleus medius andGalago senegalensis and the insectivoranTupaia glis, American Journal of Physical Anthropology, vol. 47 no. 1 (January, 1977), pp. 15-20, WILEY [doi]  [abs]
  222. Kay, RF; Cartmill, M, Cranial morphology and adaptations of Palaechthon nacimienti and other paromomyidae (Plesiadapoidea, ? primates), with a description of a new genus and species, Journal of Human Evolution, vol. 6 no. 1 (January, 1977), pp. 19-53, Elsevier BV, ISSN 0047-2484 [doi]  [abs]
  223. Kay, RF, Prosimian Biology, a review, American Scientist (1976)
  224. Kay, RF, Evolution of molar function in catarrhines, American Journal of Physical Anthropology, vol. 44 (1976), pp. 190
  225. Hylander, W; Kay, RF, Maxillary premolar reduction in the golden monkey, Journal of Dental Research, vol. 54 no. 6 (December, 1975), pp. 1242, ISSN 0022-0345 [811696]
  226. Hylander, WL; Kay, RF, Maxillary premolar reduction in the golden monkey (Rhinopithecus roxellanae)., Journal of Dental Research, vol. 54 no. 6 (November, 1975), pp. 1242, ISSN 0022-0345 [811696], [doi]
  227. Kay, RF, The functional adaptations of primate molar teeth., American Journal of Physical Anthropology, vol. 43 no. 2 (September, 1975), pp. 195-216 [doi]  [abs]
  228. KAY, RF; CARTMILL, M, SKULL OF PALAECHTHON AND COMMENTS ON ECOLOGICAL ADAPTATIONS OF PLESIADAPOIDEA, American Journal of Physical Anthropology, vol. 42 no. 2 (January, 1975), pp. 311-311, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  229. KAY, RF, ALLOMETRY AND EARLY HOMINIDS - COMMENT, Science (New York, N.Y.), vol. 189 no. 4196 (January, 1975), pp. 63-63, AMER ASSOC ADVANCEMENT SCIENCE, ISSN 0036-8075 [Gateway.cgi]
  230. Kay, RF; Cartmill, M, Skull of Palaechthon nacimienti, Nature, vol. 252 no. 5478 (December, 1974), pp. 37-38, Springer Nature [doi]  [abs]
  231. Kay, RF, Body size, molar structure and diet in primates, American Journal of Physical Anthropology, vol. 41 (December, 1974), pp. 487-488
  232. Kay, RF; Hiiemae, KM, Jaw movement and tooth use in recent and fossil primates., American Journal of Physical Anthropology, vol. 40 no. 2 (March, 1974), pp. 227-256 [doi]  [abs]
  233. Kay, RF; McHenry, HM, Humerus of robust australopithecus, Science (New York, N.Y.), vol. 182 no. 4110 (January, 1973), pp. 396-398, ISSN 0036-8075 [doi]
  234. Kay, RF, Mastication, Molar Tooth Structure and Diet in Primates, Dissertation Abstracts International, Dissertation Abstracts International, vol. B34 (1973), pp. 5293

Book Reviews

  1. R.F. Kay, Review of The Primate Fossil Record, edited by W. Hartwig, American Journal of Human Biology, vol. 15 no. 6 (2003), pp. 839-840
  2. R.F. Kay, Review of Adaptive Radiations of Neotropical Primates, edited by M. A. Norconk, A. L. Rosenberger, and P. A. Garber, International Journal of Primatology (2000)
  3. Kay, R.F., Sexual Dimorphism in Living and Fossil Primates, edited by M. Pickford and B. Chiarelli, vol. 8 (1987), pp. 93-95
  4. Kay, R.F., Primate Evolution, edited by J.G. Else and P.C. Lee, vol. 62 (1987), pp. 451

Other

  1. Kay, R.F., Mastication, molar tooth structure and diet in primates, Ph. D. dissertation (1973), pp. 450, Yale University: New Haven, CT

Papers Presented/Symposia/Abstracts

  1. Morse, PE; Pampush, JD; Kay, RF, Junk DNE: How Surface Simplification and Scanning Resolution Affect Measures of Dental Crown Sharpness, American Journal of Physical Anthropology, vol. 168 (March, 2019), pp. 169-169, WILEY
  2. Lundeen, IK; Kay, RF, Olfactory system anatomy in Homunculus and the ecological importance of olfactory cues among stem platyrrhines, American Journal of Physical Anthropology, vol. 168 (March, 2019), pp. 148-149, WILEY
  3. Gonzales, LA; Kay, RF; Salenbien, W; Angel Valdivia, L; Bejar, G; Chornogubsky, L; Martinez, J-N; Rigsby, CA; Baker, PA, New Early Miocene primate bearing faunal assemblage from the Alto Madre de Dios, Peru, American Journal of Physical Anthropology, vol. 165 (April, 2018), pp. 101-102, WILEY
  4. Pampush, JD; Morse, PE; Chester, SGB; Spradley, JP; Williams, BA; Glander, KE; Teaford, MF; Kay, RF, Dental Topography and Food Processing in Wild-Caught Costa Rican Alouatta, American Journal of Physical Anthropology, vol. 165 (April, 2018), pp. 198-198, WILEY
  5. Pampush, JD; Spradley, JP; Gladman, JT; Griffith, D; Gonzales, LA; Kay, RF, Platyrrhine dynamic dental topography: implications for secondary dental morphology in brachydont, long-lived taxa, American Journal of Physical Anthropology, vol. 162 (April, 2017), pp. 308-309, WILEY
  6. Kay, RF; Williams, BA, Are there any African Platyrrhines?, American Journal of Physical Anthropology, vol. 162 (April, 2017), pp. 239-240, WILEY
  7. Pampush, JD; Harrington, AR; Spradley, JP; Vining, AQ; Allen, KL; Kay, RF, Quantitative Occlusal Surface Complexity Metrics and Dental Wear in Alouatta palliata, American Journal of Physical Anthropology, vol. 159 (March, 2016), pp. 247-247, WILEY-BLACKWELL
  8. Spradley, JP; Pampush, JD; Kay, RF, Environmental Variation Explains Mammalian Niche Structure in Central and South America, American Journal of Physical Anthropology, vol. 159 (March, 2016), pp. 299-299, WILEY-BLACKWELL
  9. Gonzales, LA; Malinzak, MD; Kay, RF, The influence of brain size on canal radius of curvature, American Journal of Physical Anthropology, vol. 159 (March, 2016), pp. 157-158, WILEY-BLACKWELL
  10. Spradley, JP; Williams, BA; Kay, RF, Environmental Variables Affecting Primate Species Richness in the Neotropics, American Journal of Physical Anthropology, vol. 156 (March, 2015), pp. 294-294, WILEY-BLACKWELL, ISSN 0002-9483 [Gateway.cgi]
  11. Gonzales, LA; Malinzak, MD; Kay, RF, Intraspecific Semicircular Canal Variance-A Missing Element in Adaptive Scenarios?, American Journal of Physical Anthropology, vol. 156 (March, 2015), pp. 149-150, WILEY-BLACKWELL, ISSN 0002-9483 [Gateway.cgi]
  12. Spradley, JP; Glander, KE; Kay, RF, Environmental stress and molar wear in three populations of mantled howling monkeys (Alouatta palliata), American Journal of Physical Anthropology, vol. 153 (March, 2014), pp. 244-244, WILEY-BLACKWELL, ISSN 0002-9483 [Gateway.cgi]
  13. Winchester, JM; Boyer, DM; St Clair, EM; Gosselin-Ildari, AD; Cooke, SB; Ledogar, JA, Dental topography of platyrrhines and prosimians: convergence and contrasts., American Journal of Physical Anthropology, vol. 153 no. 1 (January, 2014), pp. 29-44, ISSN 0002-9483 [doi]  [abs]
  14. Cuitiño JI, Fernicola JC, Vizcaíno SF, Bargo MS, and Kay RF., Variaciones proximales-distales (O-E) en la Formación Santa Cruz, Mioceno de la Cuenca Austral. XIV Reunión Argentina de Sedimentología, Puerto Madryn Abstracts Volume:89-90., XIV Reunión Argentina de Sedimentología, Puerto Madryn, vol. abstracts volume (2014), pp. 89-90
  15. Ludeman, EM; Kirk, EC; Gosselin-Ildari, AD; Blaylock, A; Kay, RF; Godinot, M, Cochlear labyrinth volume and predicted hearing abilities in Adapis, Necrolemur, Homunculus, and Tremacebus., American Journal of Physical Anthropology, vol. 150 (January, 2013), pp. 183-184, WILEY-BLACKWELL, ISSN 0002-9483 [Gateway.cgi]
  16. Gonzales, LA; Malinzak, MD; Kay, RF, Semicircular canal morphology as a predictor of platyrrhine locomotor behavior., American Journal of Physical Anthropology, vol. 150 (January, 2013), pp. 133-133, WILEY-BLACKWELL, ISSN 0002-9483 [Gateway.cgi]
  17. Fernicola, JC; Vizcaíno, SF; Bargo, MS; Kay, RF; Cuitiño, JI; Toledo, N; Muñoz, NA; Krapovikas, V; Chornogubsky, L; Hernandez del Piño, S; Gonzales, L, Localidades fosilíferas de la Formación Santa Cruz (Mioceno Inferior) en el margen meridional del valle del río Santa Cruz, provincia de Santa Cruz, Argentina, X Congreso Argentino De Paleontología Y Bioestratigrafía Y Vii Congreso Latinoamericano De Paleontología, vol. Actas (2013), pp. 164
  18. Cooke, SB; Kay, RF, Dental morphology and dietary adaptation in Homunculus patagonicus., American Journal of Physical Anthropology, vol. 147 (January, 2012), pp. 119-120, WILEY-BLACKWELL, ISSN 0002-9483 [Gateway.cgi]
  19. Hunt, KD; Kay, RF, ORIGIN OF THE GREATER ANTILLEAN PRIMATE FAUNA, Journal of Vertebrate Paleontology, vol. 32 no. 6 (January, 2012), pp. 114-114, TAYLOR & FRANCIS INC, ISSN 0272-4634 [Gateway.cgi]
  20. Kay, RF; Vizcaino, SF; Bargo, MS, THE PALEOENVIRONMENT AND PALEOECOLOGY OF THE COASTAL MIOCENE SANTA CRUZ FORMATION (LATE EARLY MIOCENE, ARGENTINA), Journal of Vertebrate Paleontology, vol. 32 no. 6 (January, 2012), pp. 119-119, TAYLOR & FRANCIS INC, ISSN 0272-4634 [Gateway.cgi]
  21. Allen, KL; Kay, RF, ENDOCAST SHAPE AND BRAIN PROPORTIONS IN PRIMATES, Journal of Vertebrate Paleontology, vol. 32 no. 6 (January, 2012), pp. 55-55, TAYLOR & FRANCIS INC, ISSN 0272-4634 [Gateway.cgi]
  22. Allen, KL; Kay, RF; Hunt, KD; Beeker, CD; Conrad, GW; Keller, J, Brain size and endocranial morphology of Antillothrix (Holocene, Dominican Republic, Hispaniola), American Journal of Physical Anthropology, vol. 147 (January, 2012), pp. 82-82, WILEY-BLACKWELL, ISSN 0002-9483 [Gateway.cgi]
  23. Malinzak, M; Kay, RF; Hullar, TE, Semicircular canal orthogonality, not radius, best predicts mean speed of locomotor head rotation: a new hypothesis with implications for reconstructing behaviors in extinct species., American Journal of Physical Anthropology, vol. 144 (January, 2011), pp. 204-204, WILEY-BLACKWELL, ISSN 0002-9483 [Gateway.cgi]
  24. Kay, RF; Allen, KL, Dietary quality and brain size in platyrrhines: support for the "Expensive Tissue Hypothesis"., American Journal of Physical Anthropology, vol. Suppl. 48 (January, 2009), pp. 163-163, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  25. Krueger, KL; Scott, JR; Ungar, PS; Kay, RF, Comparisons of dental microwear texture attributes between facets in three primate taxa, American Journal of Physical Anthropology, vol. Suppl. 46 (January, 2008), pp. 135-135, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  26. Malinzak, M; Kay, RF; Sims, EL; Queen, R, Characterization of primate head accelerations during locomotion: A novel application of 3D motion analysis with comparative implications., American Journal of Physical Anthropology, vol. Suppl. 46 (January, 2008), pp. 147-148, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  27. Kay, RF; Kirk, EC, New data on encephalization in Miocene New World monkeys: implications for anthropoid brain evolution, Journal of Vertebrate Paleontology, vol. 28 (2008), pp. 151A
  28. Perry, JMG; Kay, RF; Vizcaino, SF; Bargo, MS, First Cranial Material of a Juvenile Monkey from the Tertiary of South America: Cranial Anatomy and Dental Eruption Sequence, Journal of Vertebrate Paleontology, vol. 28 (2008), pp. 127A
  29. Teaford, MF; Grine, FE; Kay, RF; Schubert, BW; Ungar, PS, Low magnification dental microwear: The problem of postmortem artifacts, Journal of Vertebrate Paleontology, vol. 28 (2008), pp. 151A
  30. Kay, RF; Simons, E; Ross, JL, The Basicranial Anatomy of African Eocene/Oligocene Anthropoids. Are There Any Clues for Platyrrhine Origins?, in Elwyn Simons: A Search for Origins, edited by Fleage J.G., Gilbert, C. C. (2008), pp. 125-158, Springer New York, ISBN 9780387738956 [Gateway.cgi], [doi]
  31. Kay, RF; Rae, TC; Koppe, T; Colbert, MW, Paranasal pneumatization in the early Miocene platyrrhine Homunculus patagonicus, American Journal of Physical Anthropology, vol. Supplement 41 (January, 2006), pp. 112-112, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  32. Mitchell, TRT; Schmitt, D; Kay, RF, The role of binocular vision in primate locomotion., American Journal of Physical Anthropology, vol. Suppl. 41 (January, 2006), pp. 132-133, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  33. Vizcaino S.F., Bargo M.S., Kay R.F., Reconstructing the paleoecology of the Santacrucian fauna (Early-Middle Miocene; Patagonia; Argentina) From form and function. Armadillo and primate examples., Journal of Vertebrate Paleontology, vol. 26 (2006), pp. 135A
  34. Kay, RF; Kirk, EC; Malinzak, M; Colbert, MW, Brain size, activity pattern, and visual acuity in Homunculus patagonicus, an early Miocene stem platyrrhine: the mosaic evolution of brain size and visual acuity in Anthropoidea., Journal of Vertebrate Paleontology, vol. 26 (2006), pp. 83A-84A
  35. Kay, RF; Takai, M, Pitheciidae and other platyrrhine seed predators: the dual occupation of the seed predator niche during platyrrhine evolution. (2006), pp. 511, International Journal of Primatology
  36. Perry, JMG; Kay, RF; Colbert, MW, Tooth root size and chewing muscle leverage in Homunculus, a Miocene Primate from Patagonia., Journal of Vertebrate Paleontology, vol. 26 (2006), pp. 110A
  37. Vizcaíno, SF; Bargo, MS; Kay, RF, Morfología y paleobiología de vertebrados. Aplicación a los mamíferos de la Formación Santa Cruz (Mioceno temprano-medio), Patagonia, Argentina, Ix Congreso Argentino De Paleontología Y Bioestratigrafía, 18 22 De Septiembre, Córdoba, Argentina (2006), pp. 144
  38. Vizcaíno, SF; Bargo, MS; Kay, RF, Reconstructing the paleoecology of the Santacrucian fauna (Early-Middle Miocene; Patagonia; Argentina) From form and function. Armadillo and primate examples., Journal of Vertebrate Paleontology, vol. 26 (2006), pp. 135A
  39. Kay, R .F. Vizcano, S. F. Tauber, A. A. Bargo, M. S. Williams, B. A Luna, C. Colbert, M. W., Three newly discovered skulls of Homunculus patagonicus support its position as a stem platyrrhine and establish its diurnal arboreal folivorous habits., American Journal of Physical Anthropology (2005)
  40. Mitchell, TRT; Kay, RF; Colbert, MW; Rowe, TB, The interorbital region of Dolichocebus gaimanensis (Platyrrhini, early Miocene, Argentina) based on high resolution X-ray CT imaging-phylogenetic implications., American Journal of Physical Anthropology (January, 2004), pp. 148-148, WILEY-BLACKWELL, ISSN 0002-9483 [Gateway.cgi]
  41. Kay, RF; Rossie, JB; Colbert, MW; Rowe, TB, Observations on the olfactory system of Tremacebus harringtoni (Platyrrhini, early Miocene, Sacanana, Argentina) based on high resolution X-ray CT scans., American Journal of Physical Anthropology (January, 2004), pp. 123-124, WILEY-BLACKWELL, ISSN 0002-9483 [Gateway.cgi]
  42. Tauber, A.A., R.F. Kay, and C. Luna, Killik Aike Norte, una localidad clásica de la Formación Santa Cruz (Mioceno temprano-medio), Patagonia, Argentina (2004), Ameghiniana
  43. Kay, R.F., J.B. Rossie, M.W. Colbert, and T. Rowe, Observations on the olfactory system of Tremacebus harringtoni (Platyrrhini, early, Supplement 35, Am. J. Phys. Anthropol (2004)
  44. T.R.T. Mitchell, Kay, R.F., M.W. Colbert, and T.R. Rowe, The interorbital region of Dolichocebus gaimanensis (Platyrrhini, early Miocene,, Supplement 35, American Journal of Physical Anthropology (2004)
  45. Vucetich, G. Carlini, A. Madden, R, M. Kay, R .F. Vieytes, E. C., Nuevos hallazgos entre los más antiguos roedores de América del Sur: una dispersión post transición Eoceno-Oligoceno, Asociacion Paleontologica Argentina, Reunin Anual de Communicaciones Carlini, A. Madden, R, M. Kay, R .F. Vieytes, E. C. (2004), pp. 29
  46. Vizcaino, S. F. Bargo, M. S. Kay, R .F., Functional remarks on the humerus of anteaters (Mammalia, Vermilingua) from Santa Cruz Formation (early Middle Miocene), Asociacion Paleontologica Argentina, Reunin Anual de Communicaciones Carlini, A. Madden, R, M. Kay, R .F. Vieytes, E. C. (2004), pp. 29
  47. Tauber, A. A.Kay, R .F.Luna, C., Killik Aike Norte, una localidad clásica de la Formación Santa Cruz (Mioceno temprano-medio), Patagonia, Argentina, Ameghiniana (2004)
  48. Madden, R, M. Kay, R .F. Heizler, M. Vilas, F. Re, G., Geochronology of the Sarmiento Formation at Gran Barranca and elsewhere in Patagonia: calibrating middoe Cenozoic mammal evolution in South America, Journal of Vertebrate Paleontology, vol. 24, suppl to #3 (2004), pp. 87A
  49. Teaford, MF, Back to the future, Evolutionary Anthropology, vol. 13 no. 5 (2004), pp. 198-199, WILEY, ISSN 1060-1538 [Gateway.cgi], [doi]
  50. Madden, R; Carlini, A; Vucetich, G; Kay, R; Heizler, M; Vilas, F; Re, G; Kohn, MJ; Zucol, A; Bellosi, ES, The terrestrial Eocene-Oligocene transition at Gran Barranca in Patagonia, Symposium on the Paleogene, Belgium (2004), pp. P-38
  51. Madden, R; Carlini, A; Vucetich, MG; Kay, R; Heizler, M; Vilas, F; Re, G; Kohn, MJ; Zucol, A; Bellosi, ES, Gran Barranca: the most complete South American middle Cenozoic sequence., in Symposium on the Paleogene, Symposium on the Paleogene, Belgium, vol. Abstracts and Program Book (2004), pp. P-39
  52. Mitchell, TRT; Kay, RF; Colbert, MW; Rowe, TR, The interorbital region of Dolichocebus gaimanensis (Platyrrhini, early Miocene, Argentina) based on high resolution X-ray CT imaging—phylogenetic implications., American Journal of Physical Anthropology, vol. Supplement 35 (2004), pp. 124
  53. Vizcaino, SF; Bargo, MS; Tauber, AA; Kay, RF, Myrmecophagidae (Mammalia, Xenarthra) de edad Santacrucense (Mioceno temprano-medio)., Ameghiniana (2004)
  54. Vucetich, G; Carlini, A; Madden, R; Kay, CN; Vieytes, EC, Nuevos hallazgos entre los más antiguos roedores de América del Sur: una dispersion post-transición Eoceno-Oligoceno, Resumenes De Comunicaciones De La Asociación Argentina De Paleontologia (Diamante, Argentina), vol. 2004 (2004), pp. 29
  55. Vucetich, G; Carlini, A; Madden, R; Kay, RF, New Discoveries among the Oldest Rodents in South America: How Old and How Primitive?, Journal of Vertebrate Paleontology, vol. 24 (2004), pp. 125A
  56. Kay, RF; Mitchell, TRT, Cranial evidence for the timing of the platyrrhine-catarrhine divergence., American Journal of Physical Anthropology (January, 2003), pp. 127-127, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  57. Madden, R; Carlini, A; Vucetich, G; Kay, R; Heizler, M; Vilas, F; Re, G; Kohn, MJ; Zucol, A; Bellosi, ES, The terrestrial Eocene-Oligocene transition at Gran Barranca in Patagonia (2003), pp. P-38
  58. Madden, R; Carlini, A; Vucetich, MG; Kay, R; Heizler, M; Vilas, F; Re, G; Kohn, MJ; Zucol, A; Bellosi, ES, Gran Barranca: the most complete South American middle Cenozoic sequence., vol. Abstracts and Program Book (2003), pp. P-39
  59. Madden, R.H., R.F. Kay, M.G. Vucetich, M.M. Mazzoni, G.H. Re, M. Heizler, and H. Sandeman, Geochronologic age of the Casamayoran fauna at Gran Barranca, Chubut Province, Argentina (1998)
  60. Heizler, M; Kay, RF; Madden, RH; Mazzzoni, MM; Re, G; Sandeman, H; Vucetich, MG, Geochronologic age of the casamayoran fauna at Gran Barranca, Chubut Province, Argentina, Congreso Argentino de Paleontologia y Biostratigrafia, Congreso Argentino De Paleontologia Y Biostratigrafia, vol. VII (1998), pp. 89
  61. Kay, RF; Sanchez-Villagra, MR, Skull of Hondalagus, an argyrolagid marsupial from the Middle Miocene of Bolivia, Journal of Vertebrate Paleontology (1997)
  62. Kay, RF; Johnson, DD, New platyrrhines from the middle Miocene of Argentina, American Journal of Physical Anthropology, vol. Suppl. 22 (1996), pp. 136-137
  63. Kay, RF; Madden, RH; Mazzoni, MM, Calibraciones de edades mamifero en la Gran Barranca del Lago Colhue Huapi, Provincia del Chubut, Argentina., Simposio “Paleogeno de América del Sur", B. Aires, Simposio “Paleogeno De América Del Sur". B. Aires, vol. 1 Octubre de 1996 (1996), pp. 14
  64. Ungar, PS; Kay, RF; Teaford, MF; Walker, A, Dental evidence for diets of Miocene apes, American Journal of Physical Anthropology, vol. Suppl. 22 (1996), pp. 232-233
  65. Kay, R.F., B.J. McFadden, R.H. Madden, F. Anaya, and E. Farrar, New radiomentric dates confirm late Oligocene age of Deseadan Salla beds, Bolivia, and the oldest known South American primate, Journal of Vertebrate Paleontology, vol. 15 (Suppl. 3) (1995), pp. 38A
  66. Kay, RF; Williams, BA, Recent finds of monkeys from the Oligocene/Miocene of Salla, Bolivia, American Journal of Physical Anthropology, vol. Suppl. 20 (1995), pp. 124
  67. Madden, RH; Guerrero, J; Kay, RF; Flynn, JJ; Swisher/III, CC; Walton, AH, The Laventan Stage and Laventan Age; New Chronostratigraphic and geochronologic units for the Miocene of South America, VI Argentine Congress of Paleontol. and Biostratigraphy, Trelew-Chubut, Argentina, vol. April 3-8, 1994 (1994)
  68. Meldrum, DJ; Kay, RF; Chiu, CH, Phylogenetic relationships of Cebus and Saimiri inferred from mitochondrial DNA sequences and dental anatomy, American Journal of Physical Anthropology, vol. Suppl. 16 (1993), pp. 144-145
  69. Madden, RH; Kay, RF, Aportes al conocimiento de la fauna de mamiferos del Grupo Honda, Mioceno, Colombia, IX Jornadas Argeninas de Paleontologia de Vertebrados, Trelew, Chubut, Ix Jornadas Argeninas De Paleontologia De Vertebrados, Trelew, Chubut (1992), pp. 12 al 15 de Mayo
  70. Williams, BA; Kay, RF, Phylogenetic analysis of Eocene primates suggests Omomyidae is not a monophyletic group, XIV Int. Primatol. Congress, Strasbourg, France (1992), pp. 286
  71. Ford, SM; Davis, LC; Kay, RF, New platyrrhine astragalus from the Miocene of Colombia, American Journal of Physical Anthropology, vol. Supplement 12 (1991), pp. 73-74
  72. Kay, RF; Anthony, MRL, Dietary evolution in platyrrhine primates and the comparative method, Journal of Vertebrate Paleontology, vol. 11 no. 3 (1991), pp. 39
  73. KAY, RF, A POSSIBLE GIANT TAMARIN FROM THE MIOCENE OF COLOMBIA, American Journal of Physical Anthropology, vol. 81 no. 2 (February, 1990), pp. 248-248, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  74. Kay, R. F. & Fleagle, J. G., The phylogenetic position of Parapithecidae (Primates, Anthropoidea), American Journal of Physical Anthropology, vol. 75 (December, 1988), pp. 230
  75. MADDEN, RH; KAY, RF, NEW STIRTONIA-VICTORIAE MATERIAL FROM THE MIOCENE OF COLOMBIA, International Journal of Primatology, vol. 8 no. 5 (October, 1987), pp. 473-473, PLENUM PUBL CORP, ISSN 0164-0291 [Gateway.cgi]
  76. KAY, RF; COVERT, HH, SPECIES NUMBER DETERMINATION AND SPECIMEN ALLOCATION IN FOSSIL SAMPLES, American Journal of Physical Anthropology, vol. 57 no. 2 (January, 1982), pp. 201-201, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  77. KAY, RF, THE ADAPTIVE SIGNIFICANCE OF ENAMEL THICKNESS WITH IMPLICATIONS FOR HOMINID ORIGINS, American Journal of Physical Anthropology, vol. 52 no. 2 (January, 1980), pp. 243-243, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  78. SIMONS, EL; KAY, RF; FLEAGLE, JG, RECENTLY RECOVERED OLIGOCENE APES FROM EGYPT, American Journal of Physical Anthropology, vol. 52 no. 2 (January, 1980), pp. 279-279, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  79. R.F. Kay, The adaptative significance of enamel thickness with implications for hominoid origins, Am. J. Phys. Anthropol., vol. 52 (1980), pp. 243
  80. KAY, RF; SHEINE, WS, MODEL FOR COMPARISON OF MASTICATORY EFFICIENCY IN PRIMATES, American Journal of Physical Anthropology, vol. 48 no. 3 (January, 1978), pp. 410-411, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  81. KAY, RF, POST-OLIGOCENE EVOLUTION OF CATARRHINE DIETS, American Journal of Physical Anthropology, vol. 47 no. 1 (January, 1977), pp. 141-142, WILEY-LISS, ISSN 0002-9483 [Gateway.cgi]
  82. Cartmill, M; Kay, RF, Craniodental morphology and development and the problem of tarsier affinities, VI Int. Cong. Primatology, Abstracts, vol. Abstract volume (1976), pp. 93
  83. Hiemae, K; Kay, RF, Trends in the evolution of primate mastication., Nature, vol. 240 no. 5382 (December, 1972), pp. 486-487, ISSN 0028-0836 [doi]  [abs]

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