MolluscaBase name details
original description
Sowerby, J. De C. (1840). Fossil shells from the coal-measures described and engraved by Mr. James de Carle Sowerby, F.L.S. In: Prestwich, J. The Geology Of Coalbrook Dale. <em>Transactions of the Geological Society of London, Series 2.</em> 5: pls. XXXIX and XL., available online at https://www.biodiversitylibrary.org/page/36236109 page(s): pl. 39, fig. 7 [details]
additional source
McCoy [M'Coy], F. (1844). A synopsis of the characters of the Carboniferous limestone fossils of Ireland. University Press, Dublin, 207 pp. + pls. 1-29., available online at https://www.biodiversitylibrary.org/page/11998389 page(s): 48 [details]
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