• Publications
  • Influence
The functional adaptations of primate molar teeth.
  • R. F. Kay
  • Biology, Medicine
  • American journal of physical anthropology
  • 1 September 1975
Measurements were taken on the upper and lower molars of 37 species of primates and one tupaiid to assess the relative importance of shearing, crushing and grinding features. Significant correlationsExpand
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The phyletic relationships of extant and fossil Pitheciinae (Platyrrhini, Anthropoidea)
A phylogenetic assessment of Pitheciinae ( sensu Hershkovitz, 1977) is undertaken. Among the three living genera of pitheciines, Chiropotes and Cacajao share a more recent common ancestor than eitherExpand
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Locomotor head movements and semicircular canal morphology in primates
Animal locomotion causes head rotations, which are detected by the semicircular canals of the inner ear. Morphologic features of the canals influence rotational sensitivity, and so it is hypothesizedExpand
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The Nut-Crackers - A New Theory of the Adaptations of the Ramapithecinae
Molar enamel is thicker among frugivorous extant Old World monkeys and apes than among their folivorous close relatives. Furthermore, species that have the thickest molar enamel reportedly eatExpand
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The anatomy of Dolichocebus gaimanensis, a stem platyrrhine monkey from Argentina.
Dolichocebus is known from the type skull encased in a concretion, numerous isolated teeth, parts of two mandibles, and a talus. The specimens come from the Trelew Member (early Miocene,Expand
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Anthropoid Origins: A Phylogenetic Analysis
Living Anthropoidea—the group that includes monkeys, apes, and humans—has long been recognized as a monophyletic group among primates diagnosed by a suite of features of the skull, dentition, andExpand
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Biogeography in deep time - What do phylogenetics, geology, and paleoclimate tell us about early platyrrhine evolution?
  • R. F. Kay
  • Biology, Medicine
  • Molecular phylogenetics and evolution
  • 2015
Molecular data have converged on a consensus about the genus-level phylogeny of extant platyrrhine monkeys, but for most extinct taxa and certainly for those older than the Pleistocene we must relyExpand
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Cranial morphology and adaptations of Palaechthon nacimienti and other paromomyidae (Plesiadapoidea, ? primates), with a description of a new genus and species
The Middle Paleocene paromomyid Palaechthon nacimienti has the most primitive cranial anatomy known for any plesiadapoid. In relative size and functional morphology, its molars resemble those ofExpand
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A new Pitheciin primate from the middle Miocene of Argentina
We report here a new fossil primate from the middle Miocene of Argentina. The material consists of isolated teeth, mandibular fragments, and a talus. The fossils were collected in the Collón CuraExpand
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