Scientific Classification
| Kingdom: Animalia |
| Phylum: Mollusca |
| Class: Bivalvia |
| Order: Arcida |
| Family: Arcidae |
| Genus: Dallarca |
| Species: Dallarca idonea (Conrad, 1832) |
Information
Geological Range
Paleogeographic Distribution
Stratigraphic Occurrences
| Jackson Bluff Formation [Uncommon] |
| Tamiami Formation (Pinecrest Beds) [Questionable/rare] |
| Eastover Formation |
| St. Marys Formation |
| Calvert Formation |
| Plum Point Member |
| Chattahoochee Formation |
References
None at this time.
Remarks
Previously listed as: Anadara idonea.
Note that occurrence of species in St. Marys Fm. of Virginia is mapped as “Middle Miocene”; the actual age of the formation, however, cannot be resolved beyond simply “Miocene.”
Original Description:
From Conrad (1832, p. 16): “Cordate, inequivalve, ventricose, and slightly sinuous; ribs about 25, narrow and crenulated; the crenulations most distinct on the larger valve; beaks very prominant and distant; area with undulated grooves; hinge with the series of teeth contracted in the centre, and a little decurved at the ends. Locality. St. Mary’s River, Md. Upper Tertiary.”
Online Resources
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