Bivalvia - Cardiida - Chamidae

Alternative combinations: Chama antiquata, Echinochama antiquata

Belongs to Arcinella according to W. P. Woodring 1982

Sister taxa: Arcinella arcinella, Arcinella californica, Arcinella cornuta, Arcinella draconis, Arcinella trachyderma, Arcinella yaquensis, Echinochama pristina, Echinochama praearcinella

Ecology: stationary epifaunal suspension feeder