Traits name details
original description
Calvin, S. (1890). Some new species of Palaeozoic fossils. <em>Bulletin from the Laboratories of Natural History of the State University of Iowa.</em> 1: 173-181., available online at https://www.biodiversitylibrary.org/page/15298125 page(s): 176, pl. 2, fig. 3 [details]
source of synonymy
Newell, N. D.; Boyd, D. W. (1975). Parallel evolution in early trigoniacean bivalves. <em>Bulletin of the American Museum of Natural History.</em> 154(2): 53–162. page(s): 101 [details] Available for editors 
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