垣曲盆地始新世哺乳动物研究的新进展

RECENT PROGRESS ON STUDY OF EOCENE MAMMALS IN YUANQU BASIN

简介了近几年来在垣曲盆地开展的地层古生物工作。在河南渑池任村和山西垣曲河堤、寨里等原有的化石点上通过筛洗和发掘，不仅找到了大量的以啮齿类为主的小哺乳动物，而且还发现了曙猿等珍贵的灵长类标本。新发现的火石坡化石点所产哺乳动物化石带明显的原始色彩，预示着垣曲盆地有可能存在中始新世伊尔丁曼哈期地层。按层位列出了迄今为止最为全面的垣曲盆地始新世哺乳动物名单。

Yuanqu Basin in central China is well-known for its rich Eocene mammals not only in China but also in the world. More than half a century workers both from China and abroad have done a lot in geology and paleontology. In recent years we found many important fossils not only in the old localites but also in several new ones. Among these new localites Huoshipo near Guojiazhuang Village, Wangmao Town, Yuanqu County is the most important one, where new primate and carnivorus fossils have been found. Hyrachyus sp., ?Lushilagus sp. and Propterodon irdinensis as well as primitive rodents existed in this locality demonstrate that there may be Middle Eocene Irdinmanhan deposit in Yuanqu Basin, which was unknown in the past. In the present paper these new and important localites and fossils are briefly introduced, and the whole and complete faunal lists (? middle Middle Eocene Irdinmanhan Guojiazhuang Fauna, late Middle Eocene Sharamurnnian Rencun Fauna, latest Middle Eocene Naduan Zhaili Fauna and ? Late Eocene Ulangochuan Nanbaotou Fauna) so far known are proposed (see Chinese text).