original description
Modell, H. (1957). Die fossilen Najaden Nordamerikas. Ein Klassifizierungsversuch. <em>Archiv für Molluskenkunde.</em> 86(4/6): 183-200.
page(s): 191 [details] Available for editors
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additional source
MacNeil, F.S. (1935). Fresh-water Mollusks from the Catahoula Sandstone (Miocene) of Texas. <em>Journal of Paleontology.</em> 9(1): 10-17. [details] Available for editors
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From editor or global species database
Type locality "Catahoula beds, Texas". MacNeil (1935) specified the locality more clearly: "5 miles north of the town of La Grange [Fayette Co., Texas], about one-half mile northwest of the south corner of the James Green League. The fossils were found in the upper part of a quartzitic sandstone which is developed only locally about 30 to 40 feet above the base of the Catahoula formation as described after Alexander Deussen, [U. S. Geol. Survey] Professional Paper 126." [details]