东海几种扇形珊瑚的数值分析
A NUMERICAL TAXONOMIC STUDY OF SOME FLABELLUMIAN CORALS IN THE EAST CHINA SEA
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摘要: 深水非造礁石珊瑚(Ahermatypic coral)中的扇形珊瑚属(Flabellum)在东海大陆架海区不仅数量多,而且是优势种.因扇形珊瑚属自第三纪的始新世至今都有生长,所以不但引起现代底栖生物学者的关注,而且也是第三、第四纪古生物工作者常常提及的种属.自Lesson 1831年建立Flabellum以来,不断有新种报导,但也有不少学者对这些新种提出异议,认为是同物异名,时时在合并.有分有合,意见纷纭.因此,这一属的种类庞杂,相当混乱.Abstract: This report is based upon two collections of benthic organisms by the National Bureau of Oceanography on continental shelf in the East China Sea during Oct.-Nov.1977 and Sept.-Oct.1978.The present article shows that the intersection between longer diameter of the calicle and the long edge of corallite can be considered as one of used for the identification of characteristics Flabellumian corals.The angles have been measured and used in Hierarchical Clustering Metliod to study the taxonomy of some East China Sea flabellumian corals(i.e.Flahellacm rubruan,F.pccvoninuna pari pavoninum, and F,distinctum).This method indicates that it is an extremely useful and decisive characteristics in the taxonomic systematics of some flabellumian corals.
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