摘要
贵阳乌当地区湄潭组下段化石丰富,笔石、腕足类最为常见。腕足类计有10属10种,分属于4目5超科6科,具明显的多样性,其中Sinorthis数量最多,乌当湄潭组下段的腕足动物组合属于Sinorthis动物群。该段地层腕足动物的研究提供了黔中地区早奥陶世腕足动物辐射演化的新信息,也为整个奥陶纪生物辐射演化的研究积累了资料。
The Lower Member of Meitan Formation contains abundant fossils in Wudang,Guiyang,Of which graptolthines and brachiopods are common.Brachiopods are totally 10 genera and 10 species,attributed to 4 orders,5 superfamilies and 6 families,which indicates a higher diversity.Brachiopod Sinorthis is the dominant genus,therefore the brachiopod assemblage belongs to the Sinorthis fauna.The study of brachiopods in the Lower Member of Meitan Formation provides new information for the Early Ordovician evolution and radiation of brachiopda,and even for the total Ordovician.
出处
《贵州大学学报（自然科学版）》
2011年第1期23-29,共7页
Journal of Guizhou University:Natural Sciences
基金
国家自然科学基金(40672001)
现代古生物及地层学国家重点实验室(中国科学院南京地质古生物研究所)基金(113111)
贵州大学人才引进基金(贵大人基金字:2010021)
贵州大学国家大学生创新性实验计划项目基金(贵大国创字(2008)013号)
关键词
腕足动物
湄潭组下段
早奥陶世
贵阳乌当
brachiopods
Early Ordovician
Lower Member of Meitan Formation
Wudang of Guiyang
