Carditida

Carditida is an order of marine bivalve clams.

Superfamilies and families
According to the World Register of Marine Species:


 * Family: †Archaeocardiidae


 * Superfamily: Carditoidea
 * Family: Carditidae
 * Family: Condylocardiidae
 * Superfamily: Crassatelloidea
 * Family: Crassatellidae
 * Family: Astartidae


 * Family: †Eodonidae

Notes:


 * Previously in 2010, Condylocardiidae was classified in its own superfamily, Condylocardioidea.
 * Carditida does not yet exist in the ITIS classification, with its families instead being included in Venerida.