文章基本信息

标题：Chondrichthyan fauna of the Frasnian-Famennian boundary beds in Poland
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作者：MICHAŁ GINTER
期刊名称：Acta Palaeontologica Polonica
印刷版ISSN：0567-7920
电子版ISSN：1732-2421
出版年度：2002
卷号：47
期号：2
页码：329-338
语种：English
出版社：Institute of Paleobiology PAS
摘要：New chondrichthyan microremains from several Frasnian-Famennian sections in the Holy Cross Mountains and Dębnik area (Southern Poland) are investigated and compared to previous data. The reaction of different groups of chondrichthyans to environmental changes during the Kellwasser Event is analysed. Following the extinction of phoebodont sharks of Phoebodus bifurcatus group before the end of the Frasnian, only two chondrichthyan species, viz. Protacrodus vetustus Jaekel, 1921 and Stethacanthus resistens sp. nov. (possibly closely related to "Cladodus" wildungensis Jaekel, 1921), occur in the upper part of Frasnian Palmatolepis linguiformis conodont Zone and persist into the Famennian. Global cooling is considered a possible cause of the extinction of Frasnian subtropical phoebodonts on Laurussian margins.
关键词：Chondrichthyes;Kellwasser Event;Devonian;Poland