Scientific Classification
| Kingdom: Animalia |
| Phylum: Mollusca |
| Class: Bivalvia |
| Order: Pectinida |
| Family: Pectinidae |
| Genus: Argopecten |
| Species: Argopecten comparilis (Tuomey and Holmes, 1855) |
Information
Geological Range
Paleogeographic Distribution
Stratigraphic Occurrences
| Bermont Formation [Common] |
| Caloosahatchee Formation [Common] |
| Chowan River Formation [Uncommon] |
| Waccamaw Formation [Common] |
| Duplin / Raysor Formations [Uncommon] |
| Jackson Bluff Formation [Common] |
| Raysor Formation [Uncommon] |
| Tamiami Formation [Uncommon] |
| Tamiami Formation (Buckingham Limestone) [Questionable/rare] |
| Tamiami Formation (Pinecrest Beds) [Common] |
| Yorktown Formation [Common] |
| Goose Creek Formation [Uncommon] |
Remarks
Common name: n/a
Synonymy: n/a
Type specimen, locality, and stratum: n/a
Other voucher specimens: n/a
Descriptions:
Original Description (from Tuomey and Holmes, 1857, p. 29):
“Description. Shell orbicular, convex, somewhat thick, equivalve, with concentric lines of growth, ears nearly equal; lower valve, buccal ear notched, radiately and coarsely ribbed, with five to six ribs; anal ear ribs smaller and more numerous; upper valve, ears with the radiating lines equal; ribs and interstices nearly equal.
This fossil is distinguished from P. eboreus by having the ribs more raised and convex, both valves more convex, and by the coarse ribs of the buccal ear of the lower valve. Like P. eboreus, it is also a variable shell, some specimens nearly equilateral, and others very inequilateral. It also bears a strong resemblance to a recent shell from the coast of Florida.
Plate XL, Fig. 6. Upper valve, natural size.
" 7. Lower valve.
" 8. Side view of shell.
" 9. Outline of ribs.
" 10. Magnified view of a section of the ribs and interstices, showing the concentric undulating lines.
Locality. Darlington; Smith’s, Goose Creek.”
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: n/a
Page history:
Some of the content on this page was originally published on the Neogene Atlas of Ancient Life on September 30, 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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