genus Arca


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Noun1.genus Arca - type genus of the family Arcidae: ark shells and blood clamsgenus Arca - type genus of the family Arcidae: ark shells and blood clams
mollusk genus - a genus of mollusks
Arcidae, family Arcidae - ark shells
ark shell - marine bivalve mollusk having a heavy toothed shell with a deep boat-like inner surface
blood clam - red-blooded clam