Brachidontes exustus

The valves of B. exustus can be dark blackish, yellow, green, or brown with toothed ribs. The anterior end of the valves extends past the umbo and there are up to four teeth at the hinge.{{Cite book |last=Ruppert |first=Edward E. |title=Seashore animals of the Southeast: a guide to common shallow-water invertebrates of the southeastern Atlantic coast |last2=Fox |first2=Richard S. |date=1988 |publisher=Univ. of South Carolina Pr |isbn=978-0-87249-535-7 |location=Columbia, S.C}}

B. exustus can be found along the Atlantic coast of North America, ranging from Cape Hatteras to the West Indies and Brazil.Abbott, R.T. & Morris, P.A. A Field Guide to Shells: Atlantic and Gulf Coasts and the West Indies. New York: Houghton Mifflin, 1995. 17. They are an intertidal species that attaches to hard surfaces using strong thread-like proteinaceous structures called byssal threads. They often form clusters as the lowest intertidal zone.

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Category:Mytilidae

Category:Bivalves described in 1758

Category:Taxa named by Carl Linnaeus

Category:Bivalves of North America

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