Traits name details
original description
Morris, J. & Lycett, J. (1853-1855). A Monograph of the Mollusca from the Great Oolite, chiefly from Minchinhampton and the coast of Yorkshire. Part II: Bivalves; Part III: Bivalves. <em>Monographs of the Palaeontographical Society.</em> 7(23): 1-80 [1853]; 8(28): 81-147 [1855; for 1854]., available online at https://biodiversitylibrary.org/page/20754766 page(s): 92, pl. 13, fig. 8 [details]
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