MolluscaBase name details
Unio paraholmesianus Yen, 1954 †
1503193 (urn:lsid:marinespecies.org:taxname:1503193)
unaccepted > superseded combination
Species
fossil only
Yen, T.-C. (1954). Nonmarine Mollusks of Late Cretaceous Age From Wyoming, Utah and Colorado. Part 2: Faunas from eastern Utah and western Colorado. <em>United States Geological Survey Professional Paper.</em> 254-B: 59-66.
page(s): 61, pl. 18, fig. 9, pl. 19, fig. 31 [details] Available for editors
[request]
page(s): 61, pl. 18, fig. 9, pl. 19, fig. 31 [details] Available for editors
[request]
Holotype USNM 108539
, Note "In NW corner SW 1/4 sec. 29, T. 7 S., R. 104...
Holotype USNM 108539 [details]
From editor or global species database
Type locality "In NW corner SW 1/4 sec. 29, T. 7 S., R. 104 W., near Closure, Colorado; 40 feet above highest Carbonera coal bed, and 375 feet above Sego sandstone", USA; Mount Garfield Fm., Late Cretaceous [details]
MolluscaBase eds. (2021). MolluscaBase. Unio paraholmesianus Yen, 1954 †. Accessed at: https://molluscabase.org/aphia.php?p=taxdetails&id=1503193 on 2025-09-11
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original description
Yen, T.-C. (1954). Nonmarine Mollusks of Late Cretaceous Age From Wyoming, Utah and Colorado. Part 2: Faunas from eastern Utah and western Colorado. <em>United States Geological Survey Professional Paper.</em> 254-B: 59-66.
page(s): 61, pl. 18, fig. 9, pl. 19, fig. 31 [details] Available for editors [request]
new combination reference Watters, G. T. (2001). The evolution of the Unionacea in North America, and its implications for the worldwide fauna. <em>In: Bauer, G.; Wächtler, K. (eds) Ecology and evolution of the freshwater mussels Unionoida. Springer, Berlin, Heidelberg.</em> pp. 281-307.
page(s): 293, fig. 15.23 [details] Available for editors [request]
page(s): 61, pl. 18, fig. 9, pl. 19, fig. 31 [details] Available for editors
[request]new combination reference Watters, G. T. (2001). The evolution of the Unionacea in North America, and its implications for the worldwide fauna. <em>In: Bauer, G.; Wächtler, K. (eds) Ecology and evolution of the freshwater mussels Unionoida. Springer, Berlin, Heidelberg.</em> pp. 281-307.
page(s): 293, fig. 15.23 [details] Available for editors
[request]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Synonymy May be a senior synonym of Nippononaia asinaria Russell, 1957 according to Watters (2001). [details]Type locality "In NW corner SW 1/4 sec. 29, T. 7 S., R. 104 W., near Closure, Colorado; 40 feet above highest Carbonera coal bed, and 375 feet above Sego sandstone", USA; Mount Garfield Fm., Late Cretaceous [details]
