Middle-Late Miocene to Late Pleistocene; Recent.
Cayman Islands to Georgia.
For information on the modern distribution of the species, see Malacolog.
Original Description (from Say, 1824, p. 145):
"Shell transversely ovate-orbicular, with an elevated line or fold on the anterior margin: surface with fine, somewhat elevated, concentric, nearly equal, numerous striae, forming grooves between them: apex nearly central, acute: cardinal teeth deeply grooved: lateral teeth two; edge within, simple.
Length seven-tenths, breadth nineteen-twentieths of an inch.
In general outline, this species has a resemblance to T. ostracea, Lam. In one specimen the apex is central, and in another it is placed before the middle."
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