Traits name details
original description
(of Pleurotomaria grayvillensis Norwood & Pratten, 1855 †) Norwood, J.G. and Pratten, H. (1855). Notice of fossils from the Carboniferous Series of the Western States, belonging to the Genera Spirifer, Bellerophon, Pleurotomaria, Macrocheilus, Natica and Loxonema: with descriptions of eight new characteristics species. <em>Journal of the Academy of Natural Sciences of Philadelphia, Series 2.</em> 3: 71–79. page(s): 75 [details]
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