Traits name details
original description
Clift, S. G.; Trueman, A. E. (1929). The Sequence of Non-Marine Lamellibranchs in the Coal Measures of Nottinghamshire and Derbyshire. <em>Quarterly Journal of the Geological Society.</em> 85(1): 77-108., available online at https://doi.org/10.1144/gsl.jgs.1929.085.01-04.05 page(s): 102, pl. 9, fig. 4a-c [details] Available for editors 
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