应用聚类分析研究我国palaeolenid类三叶虫分类——兼论我国黔东统沧浪铺组乌龙箐段生物带划分  

APPLICATION OF CLUSTER ANALYSIS TO THE TAXONOMY OF PALAEOLENID TRILOBITES,CHINA——A NEW APPROACH TO THE BIOZONAY CLASSIFICATION OF THE UPPER PART OF TSANGLANGPU FORMATION OF THE QIANDONGIAN SERIES IN CHINA

作　　者：林天瑞[1] 

机构地区：[1]南京大学地球科学与工程学院,南京210093

出　　处：《古生物学报》2014年第1期108-120,共13页Acta Palaeontologica Sinica

基　　金：国家自然科学基金(41230208;41372018;41221001;41330101)资助

摘　　要：文中通过对我国己发表的palaeolenid类三叶虫中的34个种头盖特征组合进行Q型聚类分析,研究我国palaeolenid类三叶虫属种的分类,并结合传统定性分析,对该34个种(包括2个属、1个亚属和1个亚种)进行修订,且合并成1个属4个种(亚种),即:Palaeolenus douvillei Mansuy,1912,Palaeolenus lantenoisi Mansuy,1912,Palaeolenus lantenoisi longispinus(Chang and Chu,1980)和Palaeolenus fengyangensis Chu,1962。文中还提出沧浪铺组乌龙箐段可采用Palaeolenus fengyangensis带(上)和Palaeolenus lantenoisi带(下)两生物带意见。In the present paper, the method of ＂Q-mode cluster analysis＂ is used in a taxonomic study of 34 cranidia belonging to palaeolenid trilobite species and subspecies in the traditional middle-late Early Cambrian, China. The statistical measurement of similarity is the incremental sum of error squares （△E）. Here, the author uses the variables in the ratio form （8） and qualitative data （5）. The transformative method of standardization is adopted in the process of original data. The resemblance relation matrices of all specimens are formed through calculation of the increments of sum of error squares between those specimens （see Table I ）. Finally the two-dimensional dendrogram is drawn by stepwise calculation （see text-fig. 1）.

关 键 词：生物带Palaeolenus Megapalaeolenus palaeolenid类 三叶虫 聚类分析寒武系 黔东统 

分 类 号：Q915[天文地球—古生物学与地层学]