†family Ischnacanthidae Woodward 1891 (spiny fish)
Chondrichthyes - Ischnacanthiformes - Ischnacanthidae
Parent taxon: Ischnacanthiformes according to J. S. Nelson et al. 2016
See also Denison 1979 and Jordan 1963
Sister taxa: Acritolepidae, Ischnacanthus, Podoliacanthus, Poracanthodidae, Serradentus, Xylacanthus
Subtaxa: Acanthodopsis Apateacanthus Gomphonchus Helenacanthus Ictinocephalus Marsdenius Persacanthus Uraniacanthus
Ecology: nektonic carnivore
Distribution: