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noun
Somewhat heart-shaped sand-burrowing bivalve mollusks.
synonym: Cardiidae.
is a specific kind of: mollusk family.
has as a member: Cardium, genus Cardium.
is a member of: Bivalvia, class Bivalvia, class Lamellibranchia, class Pelecypoda, Lamellibranchia.
Find more on family Cardiidae elsewhere: etymology - rhymes - Wikipedia.
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