Primate postcrania from the late middle Eocene of Myanmar

• Russell L. Ciochon

  Department of Anthropology, University of Iowa, Iowa City, IA 52242; Museum of Paleontology, University of Michigan, Ann Arbor, MI 48109; and Duke University Primate Center, Durham, NC 27705

• Philip D. Gingerich

  Department of Anthropology, University of Iowa, Iowa City, IA 52242; Museum of Paleontology, University of Michigan, Ann Arbor, MI 48109; and Duke University Primate Center, Durham, NC 27705

• Gregg F. Gunnell

  Department of Anthropology, University of Iowa, Iowa City, IA 52242; Museum of Paleontology, University of Michigan, Ann Arbor, MI 48109; and Duke University Primate Center, Durham, NC 27705

• Elwyn L. Simons

  Department of Anthropology, University of Iowa, Iowa City, IA 52242; Museum of Paleontology, University of Michigan, Ann Arbor, MI 48109; and Duke University Primate Center, Durham, NC 27705

抄録

Fossil primates have been known from the late middle to late Eocene Pondaung Formation of Myanmar since the description of Pondaungia cotteri in 1927. Three additional primate taxa, Amphipithecus mogaungensis , Bahinia pondaungensis and Myanmarpithecus yarshensis, were subsequently described. These primates are represented mostly by fragmentary dental and cranial remains. Here we describe the first primate postcrania from Myanmar, including a complete left humerus, a fragmentary right humerus, parts of left and right ulnae, and the distal half of a left calcaneum, all representing one individual. We assign this specimen to a large species of Pondaungia based on body size and the known geographic distribution and diversity of Myanmar primates. Body weight estimates of Pondaungia range from 4,000 to 9,000 g, based on humeral length, humeral midshaft diameter, and tooth area by using extant primate regressions. The humerus and ulna indicate that Pondaungia was capable of a wide variety of forelimb movements, with great mobility at the shoulder joint. Morphology of the distal calcaneus indicates that the hind feet were mobile at the transverse tarsal joint. Postcrania of Pondaungia present a mosaic of features, some shared in common with notharctine and adapine adapiforms, some shared with extant lorises and cebids, some shared with fossil anthropoids, and some unique. Overall, Pondaungia humeral and calcaneal morphology is most consistent with that of other known adapiforms. It does not support the inclusion of Pondaungia in Anthropoidea.

収録刊行物

• Proceedings of the National Academy of Sciences

  Proceedings of the National Academy of Sciences 98 (14), 7672-7677, 2001-07-03

  Proceedings of the National Academy of Sciences

キーワード

• Multidisciplinary

詳細情報

• CRID: 1361137044921711104
• NII論文ID: 30016223102
• NII書誌ID: AA10808769
• DOI: 10.1073/pnas.051003298
• ISSN: 10916490
• ISSN: 00278424
• Web Site: https://pnas.org/doi/pdf/10.1073/pnas.051003298
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