Bivalvia - Cardiida - Cardiidae
Parent taxon: Clinocardium according to E. J. Moore 2003
See also Coan et al. 2000 and Hendy 2020
Sister taxa: Clinocardium (Keenocardium), Clinocardium blandum, Clinocardium bulowi, Clinocardium comoxense, Clinocardium fucanum, Clinocardium okushirense, Clinocardium scapoosense, Clinocardium sookensis, Clinocardium yakatagense
Subtaxa: Clinocardium (Clinocardium) coosense Clinocardium (Clinocardium) dickersoni Clinocardium (Clinocardium) meekianum Clinocardium (Clinocardium) nuttallii Clinocardium (Clinocardium) praeblandum Clinocardium (Clinocardium) pristinum
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Quaternary of Canada (1: British Columbia collection), United States (65: California, Oregon, Washington)
• Pliocene to Pleistocene of United States (1: Washington)
• Pliocene of Japan (1), the Russian Federation (1), United States (10: Alaska, California, Oregon)
• Miocene to Pliocene of United States (1: California)
• Miocene of Canada (1: British Columbia), Japan (1), Mexico (1), the Russian Federation (6), United States (16: Alaska, California, Oregon, Washington)
• Oligocene of Japan (1), United States (4: California, Washington)
Total: 110 collections including 114 occurrences