Entobia exogyrarum (Frič, 1883) from the Upper Cretaceous of the Bohemian Cretaceous Basin |
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| Authors: | Radek Vodrážka |
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| Institution: | Institute of Geology and Palaeontology, Charles University , Czech Republic |
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| Abstract: | The validity of the little-known ichnospecies Entobia exogyrarum (Fri?) is verified. Shells of an oyster, Rhynchostreon suborbiculatum (Lam.), represent the substrate for the sponge borings. The borings occur in many Upper Cenomanian to Middle Turonian localities of the Bohemian Cretaceous Basin. This study revealed that the sponges attacked shells of living oysters. Entobia exogyrarum (Fri?) also represents one of the shallowest occurrences of Entobia borings in the Upper Cretaceous rocks. |
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| Keywords: | borings sponge Entobia Upper Cretaceous Bohemian Cretaceous Basin |
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