†family Diplacanthidae Woodward 1891 (spiny fish)
Chondrichthyes - Diplacanthiformes - Diplacanthidae
Parent taxon: Diplacanthiformes according to J. S. Nelson et al. 2016
See also Anderson 2001, Denison 1979, Hay 1902, Jordan 1963 and Olive et al. 2019
Sister taxa: Bryantonchus, Devononchus, Gladiobranchidae
Subtaxa: Diplacanthus Florestacanthus Gladiobranchus
Ecology: nektonic carnivore
Distribution: