Bivalvia - Trigoniida - Megatrigonioidae
Parent taxon: Pterotrigonia according to van Hoepen 1929
Sister taxa: Pterotrigonia (Acanthotrigonia), Pterotrigonia (Ptilotrigonia), Pterotrigonia (Rinetrigonia), Pterotrigonia (Scabrotrigonia), Pterotrigonia (Scabrotrigonia) eufaulensis, Pterotrigonia borgesi, Pterotrigonia crenulata, Pterotrigonia cristata, Pterotrigonia ethra, Pterotrigonia evansana, Pterotrigonia klamathonia, Pterotrigonia oregana, Pterotrigonia vaelsiensis, Rinetrigonia ventricosa, Notoscabrotrigonia tocaimaana, Pisotrigonia salebrosa
Subtaxa: none
Type: Pterotrigonia cristata
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Cretaceous of Antarctica (1 collection), Japan (35), South Africa (2)
• Jurassic to Cretaceous of Antarctica (1)
• Jurassic of Antarctica (8)
Total: 47 collections including 62 occurrences