Southwest Florida Shells with Emphasis on Sanibel & Captiva
José H. Leal
Atlantic Nut Clam
Shell size to 5 mm; shell small, triangular-ovate, with very smooth surface except for fine striations on outer ventral margin. Striations also present on inner ventral surface. Taxodont hinge with narrow chondrophore and about 10-12 anterior and 15-18 posterior teeth. Color light-green to gray, with inner surface bluish, nacreous.