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Definition of Genus Arca
1. Noun. Type genus of the family Arcidae: ark shells and blood clams.
Exact synonyms: Arca
Generic synonyms: Mollusk Genus
Group relationships: Arcidae, Family Arcidae
Member holonyms: Ark Shell, Blood Clam
Generic synonyms: Mollusk Genus
Group relationships: Arcidae, Family Arcidae
Member holonyms: Ark Shell, Blood Clam