MolluscaBase taxon details
original description
(of Venus incrassata J. Sowerby, 1817 †) Sowerby, J. (1815-1818). The mineral conchology of Great Britain; or coloured figures and descriptions of those remains of testaceous animals or shells, which have been preserved at various times and depths in the earth [Vol. II]. London, privately published, pp. 1-235 + index, errata and addenda [3 pp.] + supplementary index to vol. II, pp. 240-251; pl. 103-233. , available online at http://www.biodiversitylibrary.org/item/210427
page(s): 126, pl. 155, figs 1, 2 [details]
original description
(of Pitar (Cordiopsis) polytropa H.-J. Anderson, 1958 †) Anderson, H.-J. (1958) Zur Stratigraphie und Palaeogeographie des marinen Oberoligozäns und Miozäns am Niederrhein auf Grund der Mollusken-Faunen. Fortschritte in der Geologie von Rheinland und Westfalen, 1, 277–295. [details]
original description
(of Cyprina incrassata Nyst, 1836 †) Nyst, P. H. (1836). Recherches sur les coquilles fossiles de Kleyn-Spauwen et Housselt, (Province du Limbourg). <em>Messager des Science et des Arts de la Belgique ou Nouvelles Archives historiques, littéraires et scientifiques.</em> 4: 139-180, 4 pls. [details]