Bivalvia - Cardiida - Cardiidae

Alternative spelling: Tridacnidae

Parent taxon: Eucardiids according to J. G. Carter et al. 2011

Sister taxa: Cardiinae, Cerastodermatinae, Clinocardiinae, Fraginae, Lymnocardiinae, Orthocardiinae, Profraginae, Trapezicardiinae

Subtaxa: Avicularium, Byssocardium, Hippopus, Omanidacna, Tridacna

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Ecology: stationary epifaunal photosymbiotic-suspension feeder