Bivalvia - Cardiida - Cardiidae

Alternative combinations: Cardium lacunosum, Vasticardium lacunosum

Belongs to Trachycardium according to G. Rosenberg et al. 2006

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

Ecology: facultatively mobile infaunal suspension feeder