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 athttp://digitallibrary.amnh.org/handle/2246/650 page(s): 625, pl. 40, figs 1-2 [details]
, Note "In Laramy Clay, about 120 feet about Pierre...
From editor or global species database
Type locality "In Laramy Clay, about 120 feet about Pierre shales, on Snow Creek, on the Missouri River, in Montana", USA; Laramie Fm., Maastrichtian, Late Cretaceous [details]
original descriptionWhitfield, 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 athttp://digitallibrary.amnh.org/handle/2246/650 page(s): 625, pl. 40, figs 1-2 [details]
source of synonymyHartman, J.H. (1998). The biostratigraphy and paleontology of latest Cretaceous and Paleocene freshwater bivalves from the western Williston Basin, Montana, U.S.A. In: Johnston, P.A. & Haggart, J.W. Bivalves: an eon of evolution. Calgary, University of Calgary Press, 317-345. page(s): 330-331 [details] Available for editors [request]
source of synonymyHenderson, J. (1935). Fossil non-marine Mollusca of North America. <em>Geological Society of America Special Papers.</em> 3: 1-313. page(s): 85-86 [details] Available for editors [request]
Present Inaccurate Introduced: alien Containing type locality
Synonymy Considered a synonym of Unio stantoni by Henderson (1935: 85-86), Tozer (1956) and Hartman (1998); listed as valid species by Russell (1976). [details] Type locality "In Laramy Clay, about 120 feet about Pierre shales, on Snow Creek, on the Missouri River, in Montana", USA; Laramie Fm., Maastrichtian, Late Cretaceous [details]
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