WoRMS name details
original description
(of Helix concava Say, 1821) Say, T. (1821). Description of univalve shells of the United States. <em>Journal of the Academy of Natural Sciences of Philadelphia.</em> 2(1): 149-179., available online at https://www.biodiversitylibrary.org/page/36831337 page(s): 159 [details]
basis of record
Zilch, A. (1983). Die Typen und Typoide des Natur-Museums Senckenberg, 71: Mollusca: Streptaxacea (2): Haplotrematidae, Systrophiidae, Rhytididae, Streptaxidae (Nachträge zu Teil 24). <em>Archiv für Molluskenkunde.</em> 113 (1/6): 117–149; 231–233, Taf. 11–13. page(s): 117 [details] Available for editors [request]
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