MolluscaBase name details
original description
(of Pupa protracta F. Sandberger, 1875 †) Sandberger, C.L.F. (1870-1875). <i>Die Land- und Süßwasser-Conchylien der Vorwelt</i>. C. W. Kreidel, Wiesbaden. [pp. 1-96, pl. 1-12 (1870); pp. 97-160, pl. 13-20 (1871); pp. 161-256, pl. 21-32 (1873); pp. 257-352, pl. 33-36 (1874); pp i-viii, 353-1000 (1875) according to Woodward, 1906]. , available online at https://biodiversitylibrary.org/page/49567154 page(s): 400 [details] 
basis of record
Gottschick, F.; Wenz, W. (1919). Die Land- und Süßwassermollusken des Tertiärbeckens von Steinheim am Aalbuch. 1. Die Vertiginiden. <em>Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft.</em> 51(1): 1-23., available online at https://www.biodiversitylibrary.org/page/35544548 page(s): 21 [details]
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