广西、贵州的Zelia及其地层分布

ZELLIA (FUSULINID) FROM GUANGXI AND GUIZHOU

标本采自广西宜山、天等和贵州独山、紫云等地的早二叠世地层中。Ｚｅｌｌｉａ富集于层面，大多和Ｐｓｅｕｄｏｓｃｈｗａｇｅｒｉｎａ，Ｓｐｈａｅｒｏｓｃｈｗａｇｅｒｉｎａ，Ｒｏｂｕｓｔｏｓｃｈｗａｇｅｒｉｎａ共生，在确定石炭二叠系界线时具有一定的地层意义。现对Ｚｅｌｉａ的属征加以阐述、讨论和归并。

This report deals with the genus Zellia recently collected from Carboniferous-Permian successions in Yishan and Tiandeng of Guangxi,and Dushan and Ziyun of Guizhou,where Zellia is abundantly present, and is concentrated on stratal surfaces,and mostly found in association with Pseudoschwagerina,Sphaeroschwagerina and Robustoschwagerina.Zellia is significant in defining the Carboniferous Permian boundary.The morphological characteristics,stratigraphic range and geographic distribution of Zellia are discussed;15 species and subspecies of Zellia are described and figured,including 1 new species。