Bivalvia - Trigoniida - Megatrigonioidae
Parent taxon: Megatrigonioidae according to J. G. Carter et al. 2011
Sister taxon: Rutitrigoniitae
Subtaxa: Iotrigoniidae Megatrigoniidae
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Cretaceous to Paleogene of Argentina (1 collection)
• Cretaceous of Algeria (3), Angola (3), Antarctica (3), Argentina (54), Australia (1), Austria (1), Belgium (1), Brazil (3), Canada (9: British Columbia), Chile (26), Colombia (1), Ecuador (1), Egypt (30), France (9), Germany (1), Hungary (2), India (4), Italy (2), Japan (135), Kyrgyzstan (1), Libya (4), Madagascar (1), Mexico (6), Mozambique (10), New Zealand (23), North Atlantic (1), Oman (4), Peru (13), Portugal (4), the Russian Federation (3), Serbia (2), South Africa (14), Spain (2), Switzerland (20), Trinidad and Tobago (1), Turkmenistan (3), Ukraine (29), the United Arab Emirates (3), the United Kingdom (24), United States (268: Alabama, Arizona, Arkansas, California, Delaware, Georgia, Maryland, Mississippi, Missouri, New Jersey, New Mexico, North Carolina, South Carolina, Tennessee, Texas), Yemen (1)
• Jurassic to Cretaceous of Antarctica (1), Argentina (1), Chile (1)
• Jurassic of Antarctica (9), Argentina (4), Canada (6: British Columbia), Chile (5), India (3), Madagascar (1), Tanzania (2), United States (1: Texas)
Total: 761 collections including 886 occurrences