Scientific Classification
| Kingdom: Animalia |
| Phylum: Mollusca |
| Class: Bivalvia |
| Order: Carditida |
| Family: Carditidae |
| Genus: Cyclocardia |
| Species: Cyclocardia granulata (Say, 1824) |
Information
Geological Range
Paleogeographic Distribution
Stratigraphic Occurrences
| Bermont Formation [Questionable/rare] |
| Bear Bluff Formation [Questionable/rare] |
| Chowan River Formation [Common] |
| Nashua Formation [Uncommon] |
| Waccamaw Formation [Common] |
| Duplin Formation [Common] |
| Jackson Bluff Formation [Abundant] |
| Raysor Formation [Common] |
| Tamiami Formation (Pinecrest Beds) [Common] |
| Yorktown Formation [Abundant] |
| Yorktown Formation (Moore House 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 Say, 1824, p. 142):
“Suborbicular, with about twenty-five convex ribs, and wrinkled across; inner margin crenate.
Description. Beaks nearly central, a little prominent, curved backward: ribs granulated on the umbones, and transversely wrinkled near the base, convex: apices somewhat prominent beyond the general curve of the shell: inner margin and edge crenate: cardinal teeth two.
Length from the apex to the base four-fifths of an inch, breadth nearly the same.
Rather proportionally longer than the decussata, and more oblique.”
To access this description in its original formatting through the Biodiversity Heritage Library, click here.
Measurements: n/a
Other remarks: n/a
References: n/a
Online resources:
Page history:
Some of the content on this page was originally published on the Neogene Atlas of Ancient Life on June 25, 2014. 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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