广西靖西晚寒武世无刺和温虫(Hewenia anacantha)新材料  

NEW MATERIALS OF LATE CAMBRIAN HEWENIAANACANTHA FROM JINGXI COUNTY,GUANGXI,SOUTH CHINA

作　　者：熊铎 陈贵英[1] 韩乃仁[1] 

机构地区：[1]桂林理工大学地球科学学院,桂林541004

出　　处：《古生物学报》2015年第2期240-249,共10页Acta Palaeontologica Sinica

基　　金：国家自然科学基金项目(41072018)资助

摘　　要：和温虫(Hewenia)自1977年建属30余年来鲜有报道。本文对陈贵英、韩乃仁等在2009年、2011年采自广西靖西的无刺和温虫(Hewenia anacantha)进行描述和统计分析,并将当前标本与之前周天梅和朱学剑描述的同属标本进行对比讨论。此批标本数量较大,保存较好,甚至有唇瓣保存。Hewenia anacantha是一以截锥形头鞍、新月形大眼叶、加宽的前边缘、狭长后侧翼、颊刺小或缺失为主要特征的后颊类小尾至异尾型三叶虫。The genus Hewenia was first identified in1977,however,little has been known about Hewenia during the past 30 years. Here, we provide the description and statistical analysis of Hewenia anacantha individuals collected in 2009 and 2011 by Chen Guiying and Han Nairen in Jingxi County, Guangxi Zhuang Autonomous Region,China. We also compare the studied Heweniaspecimens with the Heweniareported by Zhou Tianmei and Zhu Xuejian. Results show that the studied trilobites are abundant and well preserved,in which some even preserve hypostomas.The Hewenia anacanthais a micropygous to subisopygous,opisthoparian type trilobite species,characterized by cut-tapered glabella, big and crescent eye lobe,dilated anterior border,long and narrow postero-lateral limb, missing or undeveloped genal spine.

关 键 词：无刺和温虫 Hewenia anacantha 晚寒武世 靖西 广西 华南 

分 类 号：Q915[天文地球—古生物学与地层学]