Traits name details
original description
Davies, J. H.; Trueman, A. E. (1927). A Revision of the Non-Marine Lamellibranchs of the Coal Measures, and a Discussion of their Zonal Sequence. <em>Quarterly Journal of the Geological Society.</em> 83(1-5): 210-259., available online at https://doi.org/10.1144/gsl.jgs.1927.083.01-05.09 page(s): 225, pl. 16, fig. 10a-c [details] Available for editors 
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