应用聚类分析研究小油栉虫亚目(Olenellina)的科和亚科的分类

Olenellina亚目三叶虫是组成早寒武世西方动物群重要分子,该亚目的超科一级分类单位已取得较一致看法,但各家对科和亚科的划分,尚未取得统一意见.本文作者在前人分类基础上,对已建立的10个科(和亚科)的模式属标本进行Q型聚类分析,其结果,除了将Elliptocephalinae亚科和Wanneriinae亚科合并,并采用前者作为亚科名外,其它各科和各亚科分类,与Hupe(1953)和Harrington等(1959)的分类一致。文中还对Bathynoina亚目中仅有的两个属归属问题,也从聚类分析角度进行了讨论。

APPLICATION OF CLUSTER ANALYSIS TO THE TAXONOMY OF FAMILIES AND SUBFAMILIES OF SUBORDER OLENELLINA (TRILOBITA)

In accordance with the dorsal skeleton structures, the method of Q-mode cluster analysis is used in the present paper for a taxonomic study of 10 families and subfamilies of the suborder Olenellina that was established or adopted by Hupe (1953-1955), Harrington et al. (1959), (1960) and Bergstrom (1973). The authors suggests that the suborder Olenellina be divided into one superfamily i. e., superfamily Olenellacea Vogdes, 1893, 2 families and 8 subfamilies i. c., family Olenellidae Vogdes, 1893 (including subfamily Nevadinae Hupe, 1952, subfamily Olenelloidinae Hupe, 1952, subfamily Holmiinae Hupe, 1952, subfamily Callaviinae Poulsen, 1959, subfamily Olenellinae Vogdes, 1893, subfamily Elliptocephalinae Hupe, 1952, emended herein, subfamily Neltneriinae Hupe, 1952 and subfamily Fallotaspidinae Hupe, 1952) and family Daguinaspidae Hupe, 1952. The taxonomy corresponds generally to those of the traditional qualitative analysis, except the subfamily Wanneriinae Hupe, 1952, which is assigned to the subfamily Elliptocephalinae Hupe, 1952 by the authors. In the present paper, the taxonomy of Bathynotus and Bathynotellus of the suborder Bathynotina is discussed by means of cluster analysis,too.