Bivalvia - Cardiida - Cardiidae

Alternative spelling: Dallocardia

Parent taxon: Trachycardium according to W. P. Woodring 1982

Sister taxa: Cardium (Trachycardium) greenhoughi, Cardium (Trachycardium) minbuense, Cardium (Trachycardium) protosubrugosum, Cardium (Trachycardium) riachuelense, Cardium (Trachycardium) sindiense, Trachycardium (Mexicardia), Trachycardium (Phlogocardia), Trachycardium (Trachycardium), Trachycardium cotteri, Trachycardium enode, Trachycardium eufaulensis, Trachycardium eversum, Trachycardium halaense, Trachycardium kinsmarae, Trachycardium lacunosum, Trachycardium mollyni, Trachycardium multiradiatum, Trachycardium muricatum, Trachycardium planicostata, Trachycardium puelchum, Trachycardium thalassium

Subtaxa: Trachycardium (Dallocardia) baiterum, Trachycardium (Dallocardia) bowdenense, Trachycardium (Dallocardia) dominicense, Trachycardium (Dallocardia) phlyctaena, Trachycardium (Dallocardia) puebloense, Trachycardium (Dallocardia) quadragenarium, Trachycardium (Dallocardia) tintinnabularum

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Ecology: facultatively mobile infaunal suspension feeder