Isistius Gill 1864 (shark)
Chondrichthyes - Squaliformes - Squalidae
PaleoDB taxon number: 34548
Parent taxon: Squalidae according to R. W. Purdy et al. 2001
Sister taxa: Acanthias, Acanthidium, Acanthorhinus, Atractophorus, Centrophoroides, Centroscyllium, Dalatias, Entoxychirus, Lepidorhinus, Machephilus, Megasqualus, Nasisqualus, Paracentroscyllium, Protosqualus, Scymnodon, Spinax, Squalinae, Squalus, Trigonognathus, Zameus
Subtaxa: Isistius triangulus, Isistius trituratus
Ecology: nektonic carnivore