MolluscaBase name details
Pyrgulopsis williamsi Hannibal, 1912 †
1263255 (urn:lsid:marinespecies.org:taxname:1263255)
unaccepted > superseded combination
Species
fossil only
Hannibal, H. (1912). A synopsis of the recent and Tertiary freshwater Mollusca of the Californian province, based upon an ontogenetic classification. <em>Proceedings of the Malacological Society of London.</em> 10(2): 112-166, pls 5-6; 10(3): 167-211, pls 7-8., available online at http://biodiversitylibrary.org/page/15237075
page(s): 189-190, pl. 8, fig. 29 [details]
page(s): 189-190, pl. 8, fig. 29 [details]
Type locality contained in California
type locality contained in California [details]
MolluscaBase eds. (2021). MolluscaBase. Pyrgulopsis williamsi Hannibal, 1912 †. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1263255 on 2025-07-10
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original description
Hannibal, H. (1912). A synopsis of the recent and Tertiary freshwater Mollusca of the Californian province, based upon an ontogenetic classification. <em>Proceedings of the Malacological Society of London.</em> 10(2): 112-166, pls 5-6; 10(3): 167-211, pls 7-8., available online at http://biodiversitylibrary.org/page/15237075
page(s): 189-190, pl. 8, fig. 29 [details]
page(s): 189-190, pl. 8, fig. 29 [details]
Present Inaccurate Introduced: alien Containing type locality
