中国中侏罗世哺乳动物研究新进展

本文介绍了中国北方东部地区发现的几种中侏罗世哺乳动物:纤细辽兽、獭形狸尾兽、远古翔兽和粗壮假碾磨齿兽,除纤细辽兽发现于辽宁凌源房身九龙山组外,其他3种哺乳动物化石均发现于内蒙古宁城道虎沟地区的髫髻山组.这些哺乳动物化石的发现不仅丰富了我国中侏罗世生物群的组成,加深了人们对于中侏罗世哺乳动物多样性的认识,而且为解决我国北方东部地区晚中生代地层的划分和对比提供了可靠的古生物证据.

New Advances in the Study of Middle Jurassic Mammals in China

This paper describes in brief some Middle Jurassic mammals from the eastern part of northern China,which include Liaotherium gracile,Castrocauda lutrasimilis,Volaticotherium antiquus and Pseudotribos robustus.Liaotherium gracile was found in the Jiulongshan Formation of Fangshen village,Lingyuan City,Liaoning Province,and the other three kinds were all unearthed from the Tiaojishan Formation in Daohugou area,Ningcheng County,Inner Mongolia.The discovery of these fossil mammals has not only enriched the components of Middle Jurassic biota in China and deepened our understanding of the diversity of mammals in Middle Jurassic,but also provided the palaeontological evidence for the subdivision and correlation of Late Mesozoic strata in the eastern part of northern China.