Nuculana concentrica
{{Short description|Species of bivalve}}
{{Speciesbox
| image =
| genus = Nuculana
| species = concentrica
| authority = (Say, 1824)
}}
Nuculana concentrica, or the Concentric nut clam, is a marine bivalve mollusc in the family Nuculanidae. It can be found in the waters of the Gulf of Mexico, ranging from Texas to Florida.Abbott, R.T. & Morris, P.A. A Field Guide to Shells: Atlantic and Gulf Coasts and the West Indies. New York: Houghton Mifflin, 1995. 4.