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1 April 2012 Of Bombers and Bivalves: North American Cenomanian Occurrence of the Rudist Durania sp. (Bivalvia: Radiolitidae) in the Upper Cretaceous Greenhorn Limestone of Southeastern Colorado
Bruce A. Schumacher
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Abstract

A colonial monospecific cluster of rudist bivalves from the lowermost Bridge Creek Limestone Member, Greenhorn Limestone (Upper Cenomanian) are attributable to Durania cf. D. cornupastoris. This discovery marks only the eighth recorded pre-Coniacian occurrence of rudist bivalves in the Cretaceous Western Interior and the only Cenomanian record of rudist Durania in North America. Discovered in 2011, the specimen was unearthed by historic aerial bombing during World War II. The appearance of rudist bivalves at mid-latitudes coincident with marked change in marine sediments likely represents the onset of mid-Cretaceous global warming.

Bruce A. Schumacher "Of Bombers and Bivalves: North American Cenomanian Occurrence of the Rudist Durania sp. (Bivalvia: Radiolitidae) in the Upper Cretaceous Greenhorn Limestone of Southeastern Colorado," Transactions of the Kansas Academy of Science 115(1/2), 28-34, (1 April 2012). https://doi.org/10.1660/062.115.0105
Published: 1 April 2012
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