Cut-ribbed Ark

Cut-ribbed Ark
Anadara floridana (Conrad, 1869)
Family Arcidae

This Cut-ribbed Ark is the largest ark in my collection and is over 4" wide. I have another large Cut-ribbed almost as long.


Large Cut-Ribbed Ark (S. Hutchinson Island, January 2021)

 


Inside view of Cut-Ribbed Ark

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Bailey-Matthews:

Shell size to 100 mm; shell large, oblong, slightly inequivalve. Sculpture of 30-38 curved radial ribs which increase in width toward margin. Each rib with faintly incised, longitudinal groove. Periostracum dark-brown. Color white.


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