文章基本信息

标题：The Platysphinctes immigration event in the Middle Oxfordian of the Polish Jura Chain (Central Poland)
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作者：Ewa Głowniak
期刊名称：Acta geologica Polonica
印刷版ISSN：0001-5709
出版年度：2000
卷号：50
期号：1
页码：143-160
语种：English
出版社：Institute of Geology, University of Warsaw
摘要：Ammonites of the subgenus Platysphinctes, represented by the species Perisphinctes (Platysphinctes) perplanatus (TINTANT, 1961), both microconchs and macroconchs, were recently found in the Middle Oxfordian of the Częstochowa Upland (Polish Jura Chain, Central Poland). Their appearance marks an invasion of ammonites of Mediterranean affinities into the Submediterranean Province. This episode is represented in the studied succession by a distinct horizon, named herein the Platysphinctes event – horizon, that is located in the upper part of the newly erected Arkelli Subzone of the Plicatilis Zone. An emended description of Perisphinctes (Platysphinctes) perplanatus and a description of a new species, Perisphinctes (Otosphinctes) arkelli sp. nov. are provided.
关键词：Perisphinctidae;Ammonoidea;Upper Jurassic;Polish Jura Chain;biostratigraphy;immigration event;taxonomy.