original description
MacNeil, F.S. (1935). Fresh-water Mollusks from the Catahoula Sandstone (Miocene) of Texas. <em>Journal of Paleontology.</em> 9(1): 10-17.
page(s): 13, pl. 3, figs 3-12, pl. 5, figs 14, 15 [details] Available for editors
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additional source
Modell, H. (1957). Die fossilen Najaden Nordamerikas. Ein Klassifizierungsversuch. <em>Archiv für Molluskenkunde.</em> 86(4/6): 183-200.
page(s): 190 [details] Available for editors
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From editor or global species database
Type locality "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", USA; Catahoula Fm., Miocene [details]