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Merisca aequistriata

Geological Range

Middle-Late Miocene to Late Pleistocene; Recent.

Paleogeographic Distribution

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."

To access this description in its original formatting through the Biodiversity Heritage Library, click here.

Stratigraphic Occurrences

Late Pleistocene
Anastasia Formation (N. FL)
Fort Thompson Formation (S. FL)
Neuse Formation (NC)
Pamlico Formation (S. FL)
Middle Pleistocene
Bermont Formation (S. FL)
Early Pleistocene
Caloosahatchee Formation (S. FL)
Nashua Formation (N. FL)
Waccamaw Formation (SC)
Late Pliocene
Duplin Formation (SC)
Duplin / Raysor formations (GA)
Jackson Bluff Formation (N. FL)
Raysor Formation (SC)
Tamiami Formation (Pinecrest Beds) (S. FL)
Yorktown Formation (VA)
Middle Miocene
Gatun Formation (Panama)
Early Miocene
Chattahoochee Formation (N. FL)
<i>Merisca aequistriata</i> from the Late Pliocene Tamiami Fm. (Pinecrest Beds) of Glades County, Florida (UF 170475).
Merisca aequistriata from the Late Pliocene Tamiami Fm. (Pinecrest Beds) of Glades County, Florida (UF 170475).
Late Pleistocene Map
Late Pleistocene Map
Middle Pleistocene Map
Middle Pleistocene Map
Early Pleistocene Map
Early Pleistocene Map
Late Pliocene Map
Late Pliocene Map
Middle Miocene Map
Middle Miocene Map
Early Miocene Map
Early Miocene Map<