Bivalvia - Cardiida - Cardiidae
Alternative spellings: Lophocardium, Protocardia (Lophocardium)
Parent taxon: Nemocardium according to E. J. Moore 2003
See also Clark and Durham 1946, Olsson 1922, Schneider 1995, Sepkoski 2002, Vokes 1980 and Woodring 1982
Sister taxa: Cardium (Nemocardium) bhagothorense, Cardium (Nemocardium) brasiliense, Nemocardium (Arctopratulum), Nemocardium (Brevicardium), Nemocardium (Divaricardium), Nemocardium (Keenaea), Nemocardium (Lyrocardium), Nemocardium (Nemocardium), Nemocardium (Pratulum), Nemocardium (Trifaricardium), Nemocardium (Varicardium), Nemocardium bechei, Nemocardium cooperii, Nemocardium eugenense, Nemocardium ezoense, Nemocardium granosulcatum, Nemocardium hadraterum, Nemocardium lene, Nemocardium lincolnensis, Nemocardium nicoletti, Nemocardium nicolletti, Nemocardium nitens, Nemocardium parile, Nemocardium patulum, Nemocardium plumsteadianum, Nemocardium salrivale, Nemocardium semiasperum, Nemocardium semitectum, Nemocardium turgidum
Subtaxa: Lophocardium cumingii Nemocardium (Lophocardium) gurabicum
Type: Cardium cumingii
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Pliocene of Costa Rica (1 collection), Haiti (1), Panama (1)
• Miocene of Costa Rica (1), the Dominican Republic (1), Ecuador (1), Panama (6)
• Eocene of Colombia (1)
Total: 13 collections each including a single occurrence