†subfamily Megatrigoniinae van Hoepen 1929 (clam)
Bivalvia - Trigoniida - Megatrigonioidae
Parent taxon: Megatrigoniidae according to J. G. Carter et al. 2011
See also Bouchet et al. 2010
Sister taxa: Pterotrigoniinae, Anditrigonia
Subtaxa: Antutrigonia Apiotrigoniini Bengtsonigonia Craginella Eoanditrigonia Megatrigoniini
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Cretaceous of Argentina (2 collections), Brazil (3), Japan (14), Kyrgyzstan (1), the Russian Federation (1), United States (3: Arizona)
• Jurassic of Argentina (3), United States (1: Texas)
Total: 28 collections including 29 occurrences