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Spondylus rotundatus Heilprin, 1886

Spondylus rotundatus
Spondylus rotundatus

Scientific Classification

Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Pectinida
Family: Spondylidae
Genus: Spondylus
Species: Spondylus rotundatus Heilprin, 1886

Information

Geological Range

Quaternary

Pleistocene

Neogene

Pliocene

Paleogeographic Distribution

Florida

Stratigraphic Occurrences

Bermont Formation [Uncommon]
Caloosahatchee Formation [Common]
Jackson Bluff Formation [Uncommon]
Tamiami Formation (Pinecrest Beds) [Abundant]

Remarks

Common name: n/a

Synonymy: n/a

Type specimen, locality, and stratum: n/a

Other voucher specimens: n/a

Descriptions:

Original Description (from Heilprin, 1886, p. 99):

“Shell (known only by the larger valve) capacious, orbicular below the hinge-line, distinctly auriculated; hinge-line triangular, pyramidal, the beak acute, laterally twisted at the apex, traversed by a median slit; cartilage-pit profound, reaching about half-way to the apex; cardinal teeth powerful, slightly spreading; external surface coarsely ornamented with irregular squamous ribs and intermediate scaly fine lines, the (imbricated) scales on the latter drawn out into flattened spines or echinations.

Height to apex, 3.5 inches; greatest width, 2.5 inches.

A solitary, perfectly preserved valve from the banks below Fort Thompson.

This species is quite distinct from any form, either recent or fossil, with which I am acquainted.”

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 4, 2015. 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.

Media

Images

Spondylus rotundatus from the Plio-Pleistocene (formation unknown) of Sarasota County, Florida (UF 34942).
Spondylus rotundatus from the Plio-Pleistocene (formation unknown) of Sarasota County, Florida (UF 34942).
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Specimen of Spondylus rotundatus figured by Heilprin (1886, pl. 14, fig. 33); 3.5 in. in length.
Specimen of Spondylus rotundatus figured by Heilprin (1886, pl. 14, fig. 33); 3.5 in. in length.
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