Traits taxon details
original description
(of ) Sowerby, G. B. I. (1843). Monograph of the genus <i>Cyclostoma</i>. In G. B. Sowerby II (ed.), <i>Thesaurus conchyliorum, or monographs of genera of shells</i>. Vol. 1 (3): 89-156, pl. 23-31. London, privately published. [23 June]. , available online at https://biodiversitylibrary.org/page/11076319 page(s): 93, pl. 29, figs. 213, 214 [details]
basis of record
Bartsch, P. & Morrison, J. P. E. (1942). Part 3 - The cyclophorid mollusks of the mainland of America. In: Torre, C. de la; Bartsch, P.; Morrison, J. P. E. The cyclophorid operculate land mollusks of America. <em>United States National Museum Bulletin.</em> 181: 142-293., available online at https://www.biodiversitylibrary.org/page/7837960 [details]
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