Preliminary Discussion on Similarity Measures with an Example of Rhuddanian Global Brachiopod Palaeobiogeography
详细信息
- 责任者：Huang Bing (State Key Laboratory of Palaeobiology and Stratigraphy ; Nanjing Institute of Geology and Palaeontology ; Chinese Academy of Sciences ; Nanjing 210008 ; China)
- 刊名：Acta Palaeontologica Sinica
- 出版年：2011
- 卷期：50(3)
- 关键词：腕足动物门 ; Brachiopoda ; 古生物地理学 ; paleobiogeography ; 全球 ; global
- 页码：p.304-320
- 图表：12 illus., 2 tables, 92 refs.
- 分类号：1103
- 出版序号：1873
- issnNo：ISSN0001-6616
- isbnNo：CN32-1188/Q
摘要
In this paper, the authors analyze global brachiopod occurrences, based on the revision of published information, for the early and late Rhuddanian, the basal stage of the Silurian immediately following the end Ordovician mass extinction.The dataset consists of 137 occurrences,72 genera,and 13 localities in the early Rhuddanian (survival interval), and 272 occurrences,91 genera,and 26 localities in the late Rhuddanian (early recovery interval).The data are analyzed using Cluster Analysis,Nonmetric Multidimensional Scaling and Minimum Spanning Tree methods using the Yule’s Y coefficient and the RC coefficient (probabilistic index of similarity). The results display palaeolatitudinal distribution patterns for brachiopod survival and recovery.
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