Scientific Classification
| Kingdom: Animalia |
| Phylum: Mollusca |
| Class: Bivalvia |
| Order: Venerida |
| Family: Ungulinidae |
| Genus: Diplodonta |
| Species: Diplodonta acclinis (Conrad, 1832) |
Information
Geological Range
Paleogeographic Distribution
Stratigraphic Occurrences
| Bermont Formation [Questionable/rare] |
| Caloosahatchee Formation [Questionable/rare] |
| Waccamaw Formation [Common] |
| Duplin Formation [Common] |
| Tamiami Formation (Pinecrest Beds) [Uncommon] |
| Shoal River Formation |
| Calvert Formation (Plum Point Member) |
Remarks
Common name: n/a
Synonymy: n/a
Type specimen, locality, and stratum: n/a
Other voucher specimens: n/a
Descriptions:
Original description (from Conrad, 1832):
“Suborbicular, or lentiform, a little oblique, with strong lines of growth; hinge with 2 diverging teeth in each valve; posterior tooth of the right valve bifid; anterior muscular impression not profoundly elongated.
Locality. York-town, Va. Upper Tertiary.
This species I obtained only in a very circumscribed spot, at a considerable elevation, in sand composed chiefly of comminuted shells. This calcarious sand prevails more or less in every part of the high bank at York-town, and as it is formed of shells not partially decomposed but comminuted by attrition, the fact is obvious that it has been subjected to a violent action of the waters at a period anterior to the deposition of the perfect shells it encloses, which could only have been effected in a tranquil sea.”
Measurements: n/a
Other remarks: n/a
References: n/a
Online resources: n/a
Page history:
Some of the content on this page was originally published on the Neogene Atlas of Ancient Life on October 27, 2016. It was developed by Jonathan R. Hendricks and colleagues and migrated here in 2026.
This page was last modified on October 28, 2026 by Jonathan R. Hendricks.
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