MolluscaBase name details
Cyclas fragilis Meek & Hayden, 1856 †
1502813 (urn:lsid:marinespecies.org:taxname:1502813)
unaccepted (subjective synonym)
Species
Cyclas Lamarck, 1798 accepted as Sphaerium Scopoli, 1777
fossil only
Meek, F.B.; Hayden, F.V. (1856). Descriptions of New Species of Acephala and Gastropoda, from the Tertiary formations of Nebraska Territory, with some general remarks on the Geology of the country about the sources of the Missouri River. Proceedings of the Academy of Natural Sciences of Philadelphia. 8: 111-126., available online at https://www.biodiversitylibrary.org/page/1935165
page(s): 115 [details]
page(s): 115 [details]
Note "Three miles above Fort Union", North Dakota,...
Type locality "Three miles above Fort Union", North Dakota, USA; Fort Union Fm., Paleocene [details]
MolluscaBase eds. (2024). MolluscaBase. Cyclas fragilis Meek & Hayden, 1856 †. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1502813 on 2025-03-19
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original description
Meek, F.B.; Hayden, F.V. (1856). Descriptions of New Species of Acephala and Gastropoda, from the Tertiary formations of Nebraska Territory, with some general remarks on the Geology of the country about the sources of the Missouri River. Proceedings of the Academy of Natural Sciences of Philadelphia. 8: 111-126., available online at https://www.biodiversitylibrary.org/page/1935165
page(s): 115 [details]
source of synonymy Henderson, J. (1935). Fossil non-marine Mollusca of North America. Geological Society of America Special Papers. 3: 1-313.
page(s): 115-116 [details] Available for editors
[request]
page(s): 115 [details]
source of synonymy Henderson, J. (1935). Fossil non-marine Mollusca of North America. Geological Society of America Special Papers. 3: 1-313.
page(s): 115-116 [details] Available for editors
[request]
Present Inaccurate Introduced: alien Containing type locality
- Type locality
- type locality contained in North Dakota [details]
From editor or global species database
Type locality "Three miles above Fort Union", North Dakota, USA; Fort Union Fm., Paleocene [details]
