论Mufushania三叶虫分类  

ON THE TAXONOMIC PROBLEM OF THE MUFUSHANIATRILOBITES

作　　者：林天瑞[1] LIN Tian-rui(School of Earth Sciences and Engineerings Nanjing University,Nanjing 210046,China)

机构地区：[1]南京大学地球科学与工程学院,南京210046

出　　处：《古生物学报》2019年第4期436-444,共9页Acta Palaeontologica Sinica

基　　金：国家自然科学基金项目(41372018)资助。

摘　　要：通过对我国己经正式发表的Mufushania三叶虫的18个种模式标本的头盖特征进行Q型聚类分析,并结合传统定性分析后,提出其中Mufushania shalangensis Zhang and Zhou inZhang et al.,1980,M.angustilimbata Zhang and Zhou inZhang et al.,1980,和M.kailiensis(Yuan in Yuan et al.,2002)(=Elrathiella kailiensis Zhou in Lu et al.,1974)等3种应从Mufushania属中删除,对余下15个种,通过修订,转移和归并为2个种:M.nankingensis Lin,1965和M.bella(Yuan in Yuan et al.,2002)。本文将对研究我国寒武纪第二世晚期褶颊虫类三叶虫系统演化、生物地理分区以及华北与华南生物地层划分和对比,提供重要依据。In accordance with the cranidia structures,the method of "Q-mode cluster analysis"used in the present paper for a taxonomic study of 18 species of the genus Mufushania,that was established or adopted by Lin Tian-rui(1965), Li Shan-ji(1978),Zhang Wen-tang et al.(1980),Sun Zhenhua(1982),Zhou Zhi-qiang et al.(1982),Guo Hong-jun et al.(1996),Yuan Jin-liang and Li Yue(1999),Peng Shan-chi et al.(2001),Yuan Jinliang et al.(2002).The statistical measurement of similarity is incremental sum of error squares(ΔE).The use of the variability by the author is the eight quantitative ratio values(see table Ⅰ).The resemblance relation matrices of all specimens are formed through calculation of the increments of sum of error squares between those specimens(see table Ⅱ ). These datum show that M.shalangensis Zhang and Zhou in Zhang et al.1980(5),M.angustilimbata Zhang and Zhou in Zhang et al.,1980(7)and M.kailiensis(Yuan in Yuan et al.,2002)(13)species should not be a member of the Mufushania,not belonging to species of Mufushania.Finally,through the application of combined cluster analysis with traditional qualitative analysis in the study of fifteen species of Mufushaniatrilobites in this paper,of which M.changi Lin,1965(2)is regarded as a junior synonym of the type species(1) and M.zhanjiaxiangensis Sun,1982(10)is regarded as a junior synonym of M.ezhongensis Sun,1982(9),too,the other thirteen species of Mufushania in the opinion on lumping and transferring the studied species is proposed(see table Ⅲ).

关 键 词：Probowmania Mufushania 三叶虫 聚类分析 寒武系 

分 类 号：Q915[天文地球—古生物学与地层学]