Plio-Pleistocene: Early Pleistocene Caloosahatchee Fm. and/or Late Pliocene Tamiami Fm. (Pinecrest Beds) (specimens of this species have not been collected in situ); Extinct.
Original Description (from Olsson and Petit, 1964, p. 568):
"A small right valve, length 10 mm. Holotype, USNM 644639. St. Petersburg, Fla. Coll. Mrs. Edna Marcott."
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