marine bivalve mollusk having a heavy toothed shell with a deep boat-like inner surface

marine bivalve mollusk having a heavy toothed shell with a deep boat-like inner surface

marine bivalve mollusk having a heavy toothed shell with a deep boat-like inner surface

marine bivalve mollusk having a heavy toothed shell with a deep boat-like inner surface

marine bivalve mollusk having a heavy toothed shell with a deep boat-like inner surface

marine bivalve mollusk having a heavy toothed shell with a deep boat-like inner surface

marine bivalve mollusk having a heavy toothed shell with a deep boat-like inner surface

marine bivalve mollusk having a heavy toothed shell with a deep boat-like inner surface

marine bivalve mollusk having a heavy toothed shell with a deep boat-like inner surface

marine bivalve mollusk having a heavy toothed shell with a deep boat-like inner surface