†Pterotrigonia (Rinetrigonia) van Hoepen 1929 (clam)
Bivalvia - Trigoniida - Megatrigonioidae
Parent taxon: Pterotrigonia according to van Hoepen 1929
Sister taxa: Pterotrigonia (Acanthotrigonia), Pterotrigonia (Pterotrigonia), Pterotrigonia (Ptilotrigonia), Pterotrigonia (Scabrotrigonia), Pterotrigonia borgesi, Pterotrigonia cristata, Pterotrigonia ethra, Pterotrigonia evansana, Pterotrigonia klamathonia, Pterotrigonia oregana, Pterotrigonia vaelsiensis, Pisotrigonia salebrosa, Rinetrigonia ventricosa
Subtaxa: none
Ecology: facultatively mobile infaunal suspension feeder
Distribution: found only at Puesto Milhue (Cretaceous of Argentina)