Dental remains of a late Eocene anthropoid primate from Thailand, Siamopithecus eocaenus, have been recently reported; complete description and comparisons of this material are given here. Siamopithecus displays several derived dental features that suggest close phylogenetic affinities among the Thai species, the Burmese Pondaungia, and the North African and Omani propliopithecines Aegyptopithecus and Moeripithecus. The geographic origin of anthropoid primates cannot be securely determined at present, but the available fossil record indicates that faunal exchanges between Africa and Southeast Asia were very probable during the Eocene, and that direct relationships between Asian and African anthropoid primates can be inferred.

译文

最近有报道说,来自泰国的始新世晚期人猿灵长类动物,Siamopithecus eocaenus,有牙齿遗骸。在此给出了对该材料的完整描述和比较。 Siamopithecus显示出一些衍生的牙齿特征,表明泰国物种,缅甸Pondaungia,北非和阿曼propliopithecines Aegyptopithecus和Moeripithecus之间具有密切的系统发生亲缘关系。目前尚不能确定人猿的地理起源,但现有的化石记录表明,始新世期间非洲和东南亚之间的动物交流非常可能,并且可以推断出亚洲和非洲人猿的直接关系。

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