original description
Edwards, F. E. (1852). A monograph of the Eocene Mollusca, or descriptions of shells from the Older Tertiaries of England. Part II. Pulmonata. <em>Monographs of the Palaeontographical Society.</em> 6 (18): 57-122, pl. 10-15., available online at https://www.biodiversitylibrary.org/page/12894018
page(s): 65, pl. 10, figs 6a-e [details]
From editor or global species database
Type locality Cary's Sconce ("Sconce") at Freshwater, Isle of Wight, and Hordwell Cliff at Milford-on-Sea, Hampshire, United Kingdom; Headon beds (Headon Hill Formation) and Bembridge beds (Bembridge Limestone Formation or Bouldnor Formation, Gurnard Member), Priabonian, late Eocene [details]