Traits taxon details
original description
Hill, R. T. (1893). Paleontology of the Cretaceous formations of Texas - The invertebrate paleontology of the Trinity Division. <em>Proceedings of the Biological Society of Washington.</em> 8(2): 9-40., available online at https://www.biodiversitylibrary.org/page/10256296 page(s): 24, pl. 2, fig. 3, 3a [details]
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