†family Pliotremidae (elasmobranch)
Chondrichthyes - Euselachii - Pliotremidae
Parent taxon: Galeoidei according to D. S. Jordan 1963
Sister taxon: Galeidae
Subtaxa: Pliotrema
Ecology: nektonic carnivore
Distribution: found only at Panoche-Dos Palos Road (Paleocene of California)