文章基本信息

标题：Campanian (Late Cretaceous) hexactinellid sponges from the white chalk of Mielnik (Eastern Poland)
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作者：Danuta Olszewska-Nejbert ; Ewa Świerczewska-Gładysz
期刊名称：Acta geologica Polonica
印刷版ISSN：0001-5709
出版年度：2011
卷号：61
期号：4
页码：383-417
语种：English
出版社：Institute of Geology, University of Warsaw
摘要：The taxonomic description of the Campanian (upper Cretaceous) hexactinellid sponges from the white chalk of Mielnik, eastern Poland, is presented. The fauna comprises 19 species belonging to 15 genera, representing by the Hexactinosida and Lychniscosida. The species Polyopesia macropora is described as new. They represent a typical sponge assemblage of the North European Province. Most of the specimens are strongly phosphatized (85% of the material), Less common are grey-beige, slightly phosphatized specimens (11%), and distinctly rarer are specimens infilled with white chalk (3%) and silicified specimens (1%). Phosphatization was the dominant fossilization process of the hexactinellid sponges in the white chalk of Mielnik.
关键词：Hexactinellid sponges;taxonomy;Phosphatization;Mielnik;Eastern Poland