First discovery of fossil Nesolagus (Leporidae,Lagomorpha) from Southeast Asia

作     者：TOMIDA Yukimitsu 

作者机构：National Museum of Nature and Science3-23-1 HyakuninchoShinjukuTokyo 169-0073Japan 

出 版 物：《Science China Earth Sciences》 (中国科学（地球科学英文版）)

年 卷 期：2010年第53卷第8期

页      面：1134-1140页

核心收录：

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 

基　　金：supported by Key Knowledge Innovation Project of Chinese Academy of Sciences (Grant No.KZCX2-YW-159) National Basic Research Program of China (Grant No.2006CB806400) 

主　　题：Guangxi of China Early Pleistocene Nesolagus sinensis sp. nov. Gigantopithecus fauna 

摘      要：A new leporid species, Nesolagus sinensis sp. nov., is described here representing the only leporid member of the Early Pleistocene Gigantopithecus fauna from Sanhe Cave, Chongzuo, Guangxi, South China and also the first fossil taxon of the Southeast Asian genus Nesolagus. Compared with two extant Nesolagus species from Indonesia and Vietnam and other related leprids, the new species has a relatively small size and an extraordinarily weak anterior internal reentrant (AIR) on p3, but it also retains the simplified paedomorphic pattern during the ontogenetic process as in extant species, which suggests that the new species is more primitive than and probably directly ancestral to extant Nesolagus species. The new species seems closely related to Alilepus longisinuosus from the Late Miocene strata of Lufeng, Yunnan, and probably diverged from a leporid similar to its ancestral form. It also indicates that Nesolagus originated in Southwest China.