Alternative combination: Cardium (Trachycardium) costaricanum
Full reference: A. A. Olsson. 1922. The Miocene of Northern Costa Rica. Bulletins of American Paleontology 9(39):1-309
Sister taxa: none
Type specimen: PRI 21254, a shell. Its type locality is East Grape Point Creek, which is in a Pliocene marine siliciclastic in Costa Rica.
Ecology: facultatively mobile infaunal suspension feeder
Distribution: found only at East Grape Point Creek