A lower jaw of Pondaungia cotteri from the Late Middle Eocene Pondaung Formation (Myanmar) confirms its anthropoid status

Yaowalak Chaimanee and Tin Thein and Stéphane Ducrocq and Aung Naing Soe and Mouloud Benammi and Than Tun and Thit Lwin and San Wai and Jean-Jacques Jaeger (2000) A lower jaw of Pondaungia cotteri from the Late Middle Eocene Pondaung Formation (Myanmar) confirms its anthropoid status. Proceedings of National Academy of Sciences of the United Staes of America (PNAS), 97 (8). pp. 4102-4105. ISSN 1091-6490


Download (127kB) | Preview


Pondaungia cotteri is the largest primate known from the Late Middle Eocene Pondaung Formation, Myanmar. Its taxonomic status has been the subject of much debate because of the fragmentary nature of its remains. Initially described as an anthropoid, some authors recently have associated it with adapid primates. These debates have been fueled not only by the incompleteness of the fossils attributed to Pondaungia but also by the reticence of many authors to regard Asia as an important evolutionary theater for Eocene anthropoids. During the November 1998 Myanmar-French Pondaung Expedition, a right lower jaw was discovered that yields the most nearly complete dentition of Pondaungia cotteri ever found: it shows the complete horizontal ramus, alveoli for the second incisor and canine, three premolars, and three molars. The symphysis showed all characteristics of anthropoids but was unfused. The canine root is large, the first premolar is absent, and the second premolar is single-rooted, reduced, and oblique in the tooth row, as in anthropoids. The premolars show a reduced mesio-distal length compared with the tooth row, and their morphology is very similar to that of Amphipithecus mogaungensis. Therefore, the two Pondaung taxa appear to be closely related to each other, with Siamopithecus as their sister taxon

Item Type: Article
Keyword: Pondaungia cotteri, fragmentary nature, anthropoid, premolar, Pondaung taxa, sister taxon, Late Middle Eocene Pondaung Formation
Subjects: R Medicine > R Medicine (General)
Department: SCHOOL > School of Medicine
Date Deposited: 26 Aug 2013 11:11
Last Modified: 11 Oct 2017 13:58
URI: https://eprints.ums.edu.my/id/eprint/6782

Actions (login required)

View Item View Item