Eared Ark (Anadara notabilis Röding, 1798)

Eared Ark
Anadara notabilis Röding, 1798

Eared Ark:
Rare in the Carolinas

By Patricia B. Mitchell.

The young Eared Ark has a little “ear,” or wing, projecting from the edge of the squarish posterior area of the shell. As the shell grows to its maximum length of 3½ inches by adding more layers of itself-producing lime (calcium carbonate), the ear is no longer evident. The shell surface is strongly ribbed, the numerous hinge teeth small. The white exterior may be covered with a brown periostracum.

Found from Florida to Brazil, in Bermuda and occasionally on Carolina beaches, a young Eared Ark is an especially charming addition to a shell collection.



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