MolluscaBase name details
original description
(of Unio distortus W. Bean, 1836 †) Bean, W. (1836). Description and Figures of <em>Unio distortus</em> Bean, and <em>Cypris concentrica</em> Bean, from the Upper Sandstone and Shale of Scarborough; and <em>Cypris arcuata</em> Bean, from the Coal Formation of Newcastle. <em>The magazine of natural history and journal of zoology, botany, mineralogy, geology and meteorology.</em> 9: 376-377., available online at https://www.biodiversitylibrary.org/page/2293321
page(s): 376, textfig. 53 [details]
basis of record
Jackson, W. (1911). On <em>Unio distortus</em> Bean, and <em>Alasmodon vetustus</em> Brown, from the Upper Estuarine Beds of Gristhorpe, Yorks. <em>The Naturalist.</em> 1911: 104-122., available online at https://www.biodiversitylibrary.org/page/29410378
page(s): 107, pl. 9, figs 1, 2, pl. 10, fig. 2 [details]