Traits taxon details
original description
(of Cypricardia contracta J. Hall, 1843 †) Hall, J. (1843). Geology of New-York. Part IV, comprising the survey of the fourth geological district. <em>Natural History of New York.</em> 4: 1-683., available online at https://www.biodiversitylibrary.org/page/55361967 page(s): 292, textfig. 139(4) [details]
basis of record
Hall, J. (1885). Palaeontology, vol. v, Part I, Lamellibranchiata II, text and plates. Containing descriptions and figures of the Dimyaria of the Upper Helderberg, Hamilton, Portage and Chemung groups. Geological Survey of the State of New York, Albany., available online at https://www.biodiversitylibrary.org/page/55020462 page(s): 399-400, pl. 66, figs 1, 3-9, 11-13, 15 (10, 16, 17, 19?), pl. 94, fig. 2 [details]
additional source
McAlester, A. L. (1962). Upper Devonian Pelecypods of the New York Chemung Stage. <em>Bulletin of the Peabody Museum of Natural History.</em> 16: 1-88, 32 pls. page(s): 61; note: "the ultimate assignment of [this] species to the genus Sphenotus is, however, doubtful" [details] Available for editors 
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