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Noetia ponderosa
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Order:	Arcida
Family:	Noetiidae
Genus:	Noetia
Species:	N. ponderosa
Binomial name
Noetia ponderosa (Say, 1822)

Noetia ponderosa, or the ponderous ark clam, is a marine clam in the family Noetiidae.

Description

The shape of the shell is rounded trigonal, almost as high as long,
with 27-31 squared radial ribs divided by fine incised lines,
and a distinctive brown or black periostracum. The exterior and interior of the shell is a white color. Size approximately 50–60 mm.

Right and left valve of the same specimen:

• Right valve
• Left valve

Distribution

Atlantic coast of North America, ranging from Virginia to Florida,
West Indies, Gulf of Mexico, and Caribbean Central America.

Habitat

Noetia ponderosa typically resides in shallow water on the ocean floor.

References

1. "WoRMS - World Register of Marine Species - Noetia ponderosa (Say, 1822)". marinespecies.org. Retrieved 2021-03-06.
2. ^ Mikkelsen, Paula M. (2008). Seashells of southern Florida : living marine mollusks of the Florida keys and adjacent regions, bivalves. Rüdiger Bieler. Princeton: Princeton University Press. ISBN 978-0-691-11606-8. OCLC 78071775.
3. Abbott, R.T. & Morris, P.A. A Field Guide to Shells: Atlantic and Gulf Coasts and the West Indies. New York: Houghton Mifflin, 1995. 11.

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