MolluscaBase taxon details
original description
(of Cyclostoma (Cyclotus) sordidum L. Pfeiffer, 1855) Pfeiffer, L. (1855). Descriptions of a new genus and twenty-three new species of Pneumonopoma, from the collection of H. Cuming, Esq. <em>Proceedings of the Zoological Society of London.</em> 23(290): 101–104 [23 July]; 23(291): 105–106, pl. 32 fig. 10 [13 August]., available online at https://www.biodiversitylibrary.org/page/30747986
page(s): 103 [details]
basis of record
Kobelt W. (1902). Das Tierreich. Eine Zusammenstellung und Kennzeichnung der rezenten Tierformen. 16. Lieferung. Mollusca. Cyclophoridae. <em>Das Tierreich.</em> XXXIX + 662 pp., 1 map. [July]. Berlin (R. Friedländer)., available online at https://biodiversitylibrary.org/page/1000211
page(s): 187 [details]
additional source
Möllendorff, O. F. von. (1898). Verzeichnis der auf den Philippinen lebenden Landmollusken. <em>Abhandlungen der Naturforschenden Gesellschaft zu Görlitz.</em> 22: 26-208., available online at https://biodiversitylibrary.org/page/58468236
page(s): 183 [details]