MolluscaBase taxon details
original description
Philippi, R. A. (1844). <i>Enumeratio molluscorum Siciliae cum viventium tum in tellure tertiaria fossilium, quae in itinere suo observavit. Vol. 2.</i>. Halle [Halis Saxorum]: Eduard Anton. iv + 303 pp., pls 13-28., available online at https://www.biodiversitylibrary.org/page/46936062 page(s): 124-125; plate 23, fig. 4 [details]
additional source
Schwartz von Mohrenstern, G. (1864). Über die Familie der Rissoiden. II. Rissoa. <em>Denkschriften der Kaiserlichen Akademie der Wissenschaften, Mathematisch-Naturwissenschaftliche Classe, Zweite Abtheilung.</em> 23: 1-56, pls 1-4., available online at http://biodiversitylibrary.org/page/7213834 page(s): 16-17; plate 1, fig. 5 [details]
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