Bivalvia - Cardiida - Cardiidae

Alternative combinations: Cardium (Cerastoderma) coosense, Clinocardium coosense, Keenocardium coosense

Belongs to Ciliatocardium according to A. I. Kafanov 2002

Sister taxa: Ciliatocardium ainuanum, Ciliatocardium asagaiense, Ciliatocardium brooksi, Ciliatocardium carlsbergianum, Ciliatocardium ermanensis, Ciliatocardium evsseevi, Ciliatocardium hataii, Ciliatocardium iwatense, Ciliatocardium kirkerensis, Ciliatocardium makiyamae, Ciliatocardium matchgarense, Ciliatocardium moorae, Ciliatocardium mutuense, Ciliatocardium obstinatus, Ciliatocardium reedi, Ciliatocardium sachalinense, Ciliatocardium schmidti, Ciliatocardium shinjiense, Ciliatocardium smekhovi, Clinocardium (Ciliatocardium) ciliatum

Type specimen: USNM 153933, a shell

Ecology: facultatively mobile infaunal suspension feeder

Average measurements (in mm): shell 48.5 x 49.5