【摘要】 记述了采自内蒙古二连浩特、额尔登敖包、扎木敖包和豪斯布尔都等地上始新统的兔形类化石:Desmatolagus vetustus、Gobiolagus tolmachovi和Leporidae indet.。对前两种以前未知的部分作了补充描述。着重讨论了额尔登敖包地点的“下白层”的归属和时代,认为它属乌兰戈楚组,时代为晚始新世。更多还原

【Abstract】 During 1980～90’s, some fossil lagomorphs were collected from Late Eocene of Erenhot, Urtyn Obo (= Erden Obo) and Haosiburdu Basin, Nei Mongol, by the teams of IVPP using screen washing technique.They are first discovered in these localities.The new discovery not only expanded the distribution of the lagomorphs in Asia, added new material of the lagomorphs and augmented the content of the faunas at the localities, but also played an important role in determining the ages of the fossiliferous beds in these localities.The undescribed specimen collected from Jhamo Obo by the Third Asiatic Expedition is also described here.更多还原