Family Hypnidae (coffin ray)
Chondrichthyes - Torpediniformes - Hypnidae
Parent taxon: Torpediniformes according to R. van der Laan 2019
See also Cappetta 1988
Sister taxa: Narcinidae, Narcinoidea, Torpedinidae
Subtaxa: none
Ecology: nektonic carnivore
Distribution: there are no occurrences of Hypnidae in the database