MolluscaBase name details
Helix occidentalis Meek & Hayden, 1857 †
1497633 (urn:lsid:marinespecies.org:taxname:1497633)
unaccepted > junior homonym (junior homonym of Helix occidentalis Récluz, 1845; Helix nebrascensis is a replacement name)
Species
fossil only
Meek, F. B.; Hayden, F. V. (1857). Descriptions of new genera of fossils, collected by Dr. F.V. Hayden, in Nebraska territory, under the direction of Lieut. G.K. Warren, US Topographical Engineer; with some remarks on the Tertiary and Cretaceous formations of the north-west, and parallelism of the latter with those of other portions of the United States and Territories. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 9: 117–148., available online at https://www.biodiversitylibrary.org/page/6330383
page(s): 135 [details]
page(s): 135 [details]
Note "Mouth Judith River", Montana, United States
Type locality "Mouth Judith River", Montana, United States [details]
MolluscaBase eds. (2021). MolluscaBase. Helix occidentalis Meek & Hayden, 1857 †. Accessed at: http://molluscabase.org/aphia.php?p=taxdetails&id=1497633 on 2025-04-04
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original description
Meek, F. B.; Hayden, F. V. (1857). Descriptions of new genera of fossils, collected by Dr. F.V. Hayden, in Nebraska territory, under the direction of Lieut. G.K. Warren, US Topographical Engineer; with some remarks on the Tertiary and Cretaceous formations of the north-west, and parallelism of the latter with those of other portions of the United States and Territories. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 9: 117–148., available online at https://www.biodiversitylibrary.org/page/6330383
page(s): 135 [details]
page(s): 135 [details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Type locality "Mouth Judith River", Montana, United States [details]
