[关键词]
[摘要]
系统描述湖北宜昌和秭归新滩晚奥陶世庙坡组球接子类及多节类三叶虫动物群中的１４种，分属于９属、７科、。根据化石保存状态、挤压变形以及个体发育特征，对前人所报道的产于本组的有关三叶早作了大量归并、转移和重新厘定，新的材料支持解释Telephiana longicephala的性双形现象。Ａtractopyge系首次在庙坡组中发现，以往它在三峡地区只见于临湘组。文中还将新疆的一个保留命名种Ｌonchodomas cf.yohi重新命名为Ｌonchodomas zhangi sp.nov.。
[Key word]
[Abstract]
species, belonging to 9 genera and 7 families, from the Upper Ordovician Miaopo Formation in Yichang and Zigui, western Hubei, are restudied on the basis of new materials. The preservation, deformation, depression and the morphological changes during ontogeny of species suggest to synonymize greatly the previously described species. Telephina longicephala seems to be a sexually dimorphic species. The first record of Atractopyge in the Miaopo Formation extended its range from the overlying Linxiang Formation down to the formation. Lonchodomas zhangi sp.nov. is named for the open nomenclature species Lonchodomas cf. yohi described by Zhang Tairong (1988) from the Taleji River Formation (Lower Ordovician) Guozigou, Xinjiang.
[中图分类号]
Q915.819.1
[基金项目]
国务院三峡工程建设委员会办公室资助，中国长江三峡工程开发总公司的经费资助，国家自然科学基金! (No .40 0 72 0 0 3，40 0 2 3 0
