MolluscaBase name details
Unio letsoni Whitfield, 1907 †
1502964 (urn:lsid:marinespecies.org:taxname:1502964)
unaccepted > superseded combination
Species
fossil only
Whitfield, R.P. (1907). Remarks on and descriptions of new fossil Unionidae from the Laramie clays of Montana. <em>Bulletin of the American Museum of Natural History.</em> 23(26): 623-628., available online at http://digitallibrary.amnh.org/handle/2246/650
page(s): 627, pl. 42, figs 1-4 [details]
page(s): 627, pl. 42, figs 1-4 [details]
Holotype AMNH 26299
, Note "180 feet above Pierre shales, 130 miles...
Holotype AMNH 26299 [details]
Type locality "180 feet above Pierre shales, 130 miles northwest of Miles City, Montana", USA; Laramie Fm., Maastrichtian, Late Cretaceous [details]
MolluscaBase eds. (2021). MolluscaBase. Unio letsoni Whitfield, 1907 †. Accessed at: https://molluscabase.org/aphia.php?p=taxdetails&id=1502964 on 2025-09-11
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original description
Whitfield, R.P. (1907). Remarks on and descriptions of new fossil Unionidae from the Laramie clays of Montana. <em>Bulletin of the American Museum of Natural History.</em> 23(26): 623-628., available online at http://digitallibrary.amnh.org/handle/2246/650
page(s): 627, pl. 42, figs 1-4 [details]
page(s): 627, pl. 42, figs 1-4 [details]
Present Inaccurate Introduced: alien Containing type locality
Holotype AMNH 26299 [details]
From editor or global species database
Type locality "180 feet above Pierre shales, 130 miles northwest of Miles City, Montana", USA; Laramie Fm., Maastrichtian, Late Cretaceous [details]
