Traits taxon details
original description
Worthen A.H. (1890). Part 2. Palaeontology of Illinois. Section 1. Description of fossil invertebrates. In: Lindahl, J. Geological Survey of Illinois. Volume 8. Geology and Palaeontology. Springfield, The Legislature of Illinois. 69-154., available online at https://www.biodiversitylibrary.org/page/19708197 page(s): 110, pl. 20, fig. 9, pl. 21, fig. 1 [details]
basis of record
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): 118 [details] Available for editors 
|