Traits name details
original description
White, C.A. (1880). Description of new invertebrate fossils from the Mesozoic and Cenozoic rocks of Arkansas, Wyoming, Colorado, and Utah. <em>Proceedings of the United States National Museum.</em> 3: 157–162., available online at https://www.biodiversitylibrary.org/page/14917257 page(s): 160 [details] 
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