MolluscaBase taxon details
Amplovalvata cyclostoma Yen, 1952 †
1260993 (urn:lsid:marinespecies.org:taxname:1260993)
accepted
Species
fossil only
Yen, T.-C. (1952). Molluscan Fauna of the Morrison Formation. <em>United States Geological Survey Professional Paper.</em> 233-B: 21-51.
page(s): 39, pl.6, figs 1a-f [details] Available for editors
[request]
page(s): 39, pl.6, figs 1a-f [details] Available for editors
[request]
Holotype USNM 107015
, Note Locality 5, Felch's Ranch, Garden Park, 9...
Holotype USNM 107015 [details]
Type locality Locality 5, Felch's Ranch, Garden Park, 9 miles north of Canon City, Fremont County, Colorado, United States; lower Morrison Formation, late Jurassic [details]
MolluscaBase eds. (2021). MolluscaBase. Amplovalvata cyclostoma Yen, 1952 †. Accessed at: http://www.molluscabase.org/aphia.php?p=taxdetails&id=1260993 on 2025-09-11
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original description
Yen, T.-C. (1952). Molluscan Fauna of the Morrison Formation. <em>United States Geological Survey Professional Paper.</em> 233-B: 21-51.
page(s): 39, pl.6, figs 1a-f [details] Available for editors [request]
page(s): 39, pl.6, figs 1a-f [details] Available for editors
[request]
Present Inaccurate Introduced: alien Containing type locality
Holotype USNM 107015 [details]
From editor or global species database
Type locality Locality 5, Felch's Ranch, Garden Park, 9 miles north of Canon City, Fremont County, Colorado, United States; lower Morrison Formation, late Jurassic [details]
