Traits name details
original description
Lycett, J. (1863). Supplementary monograph on the Mollusca from the Stonesfield Slate, Great Oolite, Forest Marble, and Cornbrash. <em>Monographs of the Palaeontographical Society of London.</em> 15: 1-129, pls XXXI-XLV., available online at https://www.biodiversitylibrary.org/page/36956458 page(s): 110-111, pl. 32, fig. 4, 4a, 4b [details]
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