Traits name details
original description
Gabb, W. M. (1860). Descriptions of new species of American Tertiary and Cretaceous fossils. <em>Journal of the Academy of Sciences of Philadelphia, Second Series.</em> 4: 375-404, pls. 67-69., available online at https://biodiversitylibrary.org/page/36862263 page(s): 401 [details]
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