摘要
报道了河南省西峡县湾潭地区二郎坪群火神庙组硅质岩夹层中的牙形石类Ａｃｏｄｕｓｏｎｅｏｔｅｎｓｉｓ及放射虫类ＥｎｔａｃｔｉｎｉａｃｏｍｐｌａｌＩａｔａ，其时代应属早、中奥陶世；与其相邻的大庙组泥质板岩中发现的螺旋管状藻类化石及其管状微化石的组合面貌可与早寒武世小壳动物群对比。这些化石的发现为二郎坪群的时代归属提供了较为可信的证据。
Two microfossil assemblages from Huoshenmiao formation of the Erlangping group inWantan area ,Xixia county of Henan province ,have been discovered.Of which ,the first one is mainlyof Early and Middle Ordovician Conodonta-Acodus oneotensis and Radiolarian-Entactinia comp lanatafrom siliceous rock of the interlayers of pillow lava,and the second one,however ,is cheifly composedof helically coiled microfossils and other tubular microfossils from the adjacent argillite,which are wellcomparable to the Lower Combrian small shelly fossils. This discovery may furnish a reliable evidencefor the correlation of the long debated Erlangping group.
出处
《西北大学学报（自然科学版）》
CAS
CSCD
1995年第4期353-358,共6页
Journal of Northwest University（Natural Science Edition）
基金
国家自然科学基金
关键词
河南
二郎坪群
微体化石
早寒武世
化石
Xixia of Henan province
Erlangping group
microfossil
Early Cambrian
Middle Or-dovician
