Traits name details
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): 625, pl. 40, figs 3-4 [details]
basis of record
Henderson, J. (1935). Fossil non-marine Mollusca of North America. <em>Geological Society of America Special Papers.</em> 3: 1-313. page(s): 87 [details] Available for editors
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