It's A Flat Out Scallop Valve

The hatchery culture of bivalves: a practical manual

scallop shells many varieties and sizes

An introduction to the study of zoology. Zoology. MOLLUSC A. 213 of the shell; the latter has " ears" or flat expan- sions on each side of the hinge. They are

Using math and mechanics to explain how bivalve shells fit together so well

Upper valve and side view of experimental scallops. (A)Amusium balloti

Valve movement – the best way to determine scallop health

Flat Ribbed Scallop Sea Shell PAIR Decatopecten Radula Natural Collectible Display Specimen Marine Bi-valve Mollusk Shell Free USA Shipping

Two Mediterranean Scallop Pecten Jacobaeus Valves Stock Photo 1486338416

Pecten jacobaeus - Wikipedia

Pecten jacobaeus - Wikiwand

Empty Flat Oyster shells on the beach (1) – Jessica's Nature Blog