original description
Vernhout, J. H. (1914). On a new variety of <i>Ampullaria crassa</i> Swainson from French Guyana. <em>Notes from the Leiden Museum.</em> 36: 47-48, pl. 2, figs. 15a, b., available online at https://www.biodiversitylibrary.org/page/14021311#page/61/ [details]
source of synonymy
Cowie, R. H. & Thiengo, S. C. (2003). The apple snails of the Americas (Mollusca: Gastropoda: Ampullariidae: <i>Asolene, Felipponea, Marisa, Pomacea, Pomella</i>): A nomenclatural and type catalog. <em>Malacologia.</em> 45(1): 41-100., available online at https://biodiversitylibrary.org/page/25129402 [details]
From editor or global species database
Type locality French Guyana, Mount Cottica on the right bank of the Lawa [details]