original description
Sowerby, J. De C. (1836). Descriptive Notes respecting the Shells figured in Plates XI. to XXIII. In: Fitton, W.H. Observations on some of the Strata between the Chalk and the Oxford Oolite, in the South-east of England. <em>Transactions of the Geological Society of London, Series 2.</em> 4(2): 335-349 (Appendix A)., available online at https://www.biodiversitylibrary.org/page/36206436
page(s): 346, pl. 21, fig. 17 [details]
additional source
Munt, M.C.; Delvene, G.; Sha, J.-G. (2012). Review of the Cretaceous non-marine Mollusca and their stratigraphical distribution in Europe <em>Journal of Stratigraphy</em>. 36(2): 314-323 [details]
From editor or global species database
Type locality "Upper part of the Weald clay, near Henhurst, Surrey" [in Fitton 1836, p. 179] (England, United Kingdom) [details]