Bivalvia - Cardiida - Cardiidae
Parent taxon: Trigoniocardia according to Dall 1900
Sister taxa: Cardium (Trigoniocardia) ballenium, Cardium (Trigoniocardia) cabopasadum, Cardium (Trigoniocardia) gadsdenense, Trigoniocardia (Apiocardia), Trigoniocardia (Goniacardia), Trigoniocardia carolinae, Trigoniocardia cordeliae, Trigoniocardia graniferum, Trigoniocardia heredia, Trigoniocardia sambaicum
Subtaxa: Trigoniocardia (Trigoniocardia) aliculum Trigoniocardia (Trigoniocardia) aminensis Trigoniocardia (Trigoniocardia) haitensis Trigoniocardia (Trigoniocardia) hannai Trigoniocardia (Trigoniocardia) minutissima Trigoniocardia (Trigoniocardia) samanicum
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Quaternary of United States (1: Florida collection)
• Pliocene of the Dominican Republic (13), Jamaica (6), Panama (1), Trinidad and Tobago (14)
• Miocene to Pliocene of the Dominican Republic (13)
• Miocene of the Dominican Republic (92), Ecuador (2), Haiti (2), Panama (30), Peru (1), Puerto Rico (1), Trinidad and Tobago (12), United States (7: Florida), Venezuela (3)
• Oligocene to Miocene of United States (1: Florida)
• Eocene of Peru (1)
Total: 200 collections including 206 occurrences