湖南石门杨家坪早寒武世三叶虫动物群

EARLY CAMBRIAN TRILOBITE FAUNAS FROM YANGJIAPING OF SHINEN, HUNAN PROVINCE

肖传桃 朱忠德

Xiao Chuantao Zhu Zhongde

通过对石门杨家坪地区早寒武世三叶虫动物群研究,建立了(1) 带、(2)-- 带、(3)- 带、(4)- 组合。生物古地理特征分析表明,自沧浪铺晚期开始,杨家坪地区生物区系应属扬子区,从而更新了研究区早寒武世生物区系属过渡区的传统观点,并建立了 、、 、、、- 等群落。

Studied the Early Cambrian trilobite faunas collected from Yangjiapingin of Shimen County,Hunan Province,four fossil zones(assemblages)have been established such as zone, zone,- zone and - assemblage.According to the analysis of the Early Cambrian paleobiogeography of the research area,Yangjiaping biogeographic area should belong to Yangzi biotic province ever since late Canglangpu age,and six communities such as community, community, community, community, community,- community have been established.This thus renewed the tranditional view of the area being a transi-tional biogeographic area in Early Cambrian.

10.11743/ogg19930406