云南祿豐、元謀晚中新世古猿地點(diǎn)始鼠科化石

The material which forms the basis of this study was collected from two hominoid localities,Shihuiba of Lufeng and Leilao of Yuanmou, in Yunnan Province in the last twenty years. Five forms of eomyid rodents, Plesieomys mirabilis gen. et sp. nov. , Heteroeomys yunnanensis gen. et sp. nov. , Leptodontomys pusillus sp. nov., Leptodontomys sp. and Eomyidae gen. et sp. indet, are now recognized in the two late Miocene faunas. Morphologically, Plesieomys n. gen. shows some similarities to Pseudadjidaumo Lindsay, 1972 of North America, but the phylogenetic relationship of the new genus to the American genus is uncertain. Heteroeomys exhibits a mixture of primitive and advanced dental features of bunodont eomyids and might be descended from an early Eomys species. Leptodontomys pusillus is characterized by its smaller size, weaker developed lingual anteroloph on M1/2, narrow anterolophid and poor mesolophid and hypolophid on m1/2. The eomyid record in Yunnan indicates that eomyid rodents are a wideranging family in Asia, and that forested habitats are preferred more by eomyids with bunodont cheekteeth than by eomyids with lophodont cheek-teeth.

作 者： 邱鑄鼎 QIU Zhu-Ding   作者單位： 中國(guó)科學(xué)院古脊椎動(dòng)物與古人類研究所,北京,100044  刊 名： 古脊椎動(dòng)物學(xué)報(bào)  ISTIC PKU 英文刊名： VERTEBRATA PALASIATICA  年，卷(期)： 2006 44(4)  分類號(hào)： Q9915.873  關(guān)鍵詞： 云南祿豐、元謀   中新世   石灰壩組、小河組   始鼠科   Lufeng   Yuanmou   Yunnan   late Miocene   Shihuiba/Xiaohe Formation   Eomyidae  

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