Family Trygonorrhinidae Last et al. 2016 (elasmobranch)
Chondrichthyes - Rhinopristiformes - Trygonorrhinidae
Parent taxon: Rhinopristiformes according to R. van der Laan 2019
Sister taxa: Atlantobatis, Glaucostegidae, Microbatis, Pristidae, Rhinidae, Rhinobatidae, Rhynchobatidae, Sowibatos, Tlalocbatos
Subtaxa: Trygonorrhina Zapteryx
Type: Trygonorhina
Ecology: nektonic carnivore
Distribution: found only at Pyramid Hill Sand Member grit zone (Oligocene of California)