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江西早奥陶世武宁动物群中Wuningia multisegmenlata Lin,1990再研究

RESTUDY OF EARLY ODOVICIAN WUNINGIA MULTISEGMENLATA LIN,1990 FROM WUNING,NORTHWESTERN JIANGXI

【Author in Chinese】 林天瑞

【Author】 LIN Tian-rui;School of Earth Sciences and Engineering,Nanjing University;

【Institution】 南京大学地球科学与工程学院

【Abstract in Chinese】 文中通过对江西早奥陶世武宁动物群再研究,对其中Wuningia multisegmenlata Lin,1990有了更全面的认识。该种背壳狭长,外骨骼可分为头甲、躯干和尾甲三部分,头甲由两个亚椭圆形瓣壳组成,外边缘具极窄的脊,头甲腹面前部伸出一对细长、由多分节组成的单肢型触角;躯干窄而长,可分40多个体节,每个体节分为一个轴区和两个肋区;尾甲呈剑状。该文不仅丰富了节肢动物化石资料,同时也可为研究节肢动物系统演化和早奥陶世生物相及地层划分与对比提供依据。

【Abstract】 In the present paper,the restudy of Wuningia multisegmenlata Lin, 1990, gave us more recognition for its dorsal exoskeleton. The diagnostic features of Wuningia multisegmenlata are:body longitudinally trilobate,cephalic shield consists of 2 shells of subellipticity in outline,and a"V"or"U"-shaped concave on the middle of the anterior margin and a pair of multijointed uniramous antennae.Trunk region with more than 40 articulating somites, and the approximate equability of the anterior region to the posterior region on the width of somites(tr.).Telson is sword in outline.It is associated with typical Early Ordovician graptolites Staurograptus dichotomus Emmons, Dictyonema flabelliforme belgica Bulman,and other fossils.

【Keywords in Chinese】 节肢动物门甲壳超纲软甲纲武宁动物群早奥陶世江西
【Key words】 ArthropodaCrustaceaMalacostracaWuning FaunaEarly OrdovicianJiangxi
【Fund】 国家自然科学基金(41372018)资助
  • 【CLC code】Q915
  • 【Downloads】34
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