Traits taxon details
original description
Hall, J. (1858). Description of new species of fossils from the Carboniferous limestones of Indiana and Illinois. <em>Transactions of the Albany Institute.</em> 4: 1-36., available online at https://www.biodiversitylibrary.org/page/43715533 [details]
basis of record
Boyd, D. W.; Newell, N. D. (1968). Hinge grades in the evolution of crassatellacean bivalves as revealed by Permian genera. <em>American Museum Novitates.</em> 2328: 1–52. [details] Available for editors 
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