Cardiidae

plural noun

Car·​di·​i·​dae

kärˈdīəˌdē

: a family of marine bivalve mollusks (order Eulamellibranchia) that have an equivalve ribbed shell with prominent umbones, a large foot adapted for creeping over sandy bottoms, and much-folded gills and that include the true cockles

Word History

Etymology

New Latin, from Cardium, type genus + -idae

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