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New early eocene anaptomorphine primate (Omomyidae) from the Washakie Basin, Wyoming, with comments on the phylogeny and paleobiology of anaptomorphines.

Publication ,  Journal Article
Williams, BA; Covert, HH
Published in: American journal of physical anthropology
March 1994

Recent paleontological collecting in the Washakie Basin, southcentral Wyoming, has resulted in the recovery of over 100 specimens of omomyid primates from the lower Eocene Wasatch Formation. Much of what is known about anaptomorphine omomyids is based upon work in the Bighorn and Wind River Basins of Wyoming. This new sample documents greater taxonomic diversity of omomyids during the early Eocene and contributes to our understanding of the phylogeny and adaptations of some of these earliest North American primates. A new middle Wasatchian (Lysitean) anaptomorphine, Anemorhysis savagei, n. sp., is structurally intermediate between Teilhardina americana and other species of Anemorhysis and may be a sister group of other Anemorhysis and Trogolemur. Body size estimates for Anemorhysis, Tetonoides, Trogolemur, and Teilhardina americana indicate that these animals were extremely small, probably less than 50 grams. Analysis of relative shearing potential of lower molars of these taxa indicates that some were primarily insectivorous, some primarily frugivorous, and some may have been more mixed feeders. Anaptomorphines did not develop the extremes of molar specialization for frugivory or insectivory seen in extant prosimians. Incisor enlargement does not appear to be associated with specialization in either fruits or insects but may have been an adaptation for specialized grooming or food manipulation.

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Published In

American journal of physical anthropology

DOI

EISSN

1096-8644

ISSN

0002-9483

Publication Date

March 1994

Volume

93

Issue

3

Start / End Page

323 / 340

Related Subject Headings

  • Wyoming
  • Tooth
  • Primates
  • Phylogeny
  • Paleodontology
  • History, Ancient
  • Fossils
  • Diet
  • Body Constitution
  • Anthropology
 

Citation

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Williams, B. A., & Covert, H. H. (1994). New early eocene anaptomorphine primate (Omomyidae) from the Washakie Basin, Wyoming, with comments on the phylogeny and paleobiology of anaptomorphines. American Journal of Physical Anthropology, 93(3), 323–340. https://doi.org/10.1002/ajpa.1330930305
Williams, B. A., and H. H. Covert. “New early eocene anaptomorphine primate (Omomyidae) from the Washakie Basin, Wyoming, with comments on the phylogeny and paleobiology of anaptomorphines.American Journal of Physical Anthropology 93, no. 3 (March 1994): 323–40. https://doi.org/10.1002/ajpa.1330930305.
Williams, B. A., and H. H. Covert. “New early eocene anaptomorphine primate (Omomyidae) from the Washakie Basin, Wyoming, with comments on the phylogeny and paleobiology of anaptomorphines.American Journal of Physical Anthropology, vol. 93, no. 3, Mar. 1994, pp. 323–40. Epmc, doi:10.1002/ajpa.1330930305.
Journal cover image

Published In

American journal of physical anthropology

DOI

EISSN

1096-8644

ISSN

0002-9483

Publication Date

March 1994

Volume

93

Issue

3

Start / End Page

323 / 340

Related Subject Headings

  • Wyoming
  • Tooth
  • Primates
  • Phylogeny
  • Paleodontology
  • History, Ancient
  • Fossils
  • Diet
  • Body Constitution
  • Anthropology