Bivalvia - Cardiida - Cardiidae
Alternative spelling: Regozara
Parent taxon: Trachycardium according to P. A. Maxwell 1978
See also Sepkoski 2002
Sister taxa: Cardium (Trachycardium) greenhoughi, Cardium (Trachycardium) mamillatum, Cardium (Trachycardium) minbuense, Cardium (Trachycardium) polycolpatum, Cardium (Trachycardium) protosubrugosum, Cardium (Trachycardium) riachuelense, Cardium (Trachycardium) sindiense, Trachycardium (Mexicardia), Trachycardium (Phlogocardia), Trachycardium (Trachycardium), Trachycardium cotteri, Trachycardium egmontianum, Trachycardium enode, Trachycardium eufaulensis, Trachycardium eversum, Trachycardium halaense, Trachycardium isocardia, Trachycardium kinsmarae, Trachycardium lacunosum, Trachycardium mollyni, Trachycardium multiradiatum, Trachycardium planicostata, Trachycardium puelchum, Trachycardium reynoldsi, Trachycardium rugosum, Trachycardium syriacum, Trachycardium thalassium, Cardium (Granocardium) sabulosum
Subtaxa: Trachycardium (Regozara) delectabile
Ecology: facultatively mobile infaunal suspension feeder
Distribution: found only at Peppermint Grove Limestone Mbr, Tamala Limestone - East Freemantle (Quaternary of Australia)