Family Sphyrnidae Gill 1872 (hammerhead shark)
Parent taxon: Carcharhiniformes according to D. J. Cicimurri and J. L. Knight 2009
Sister taxa: Abdounia, Carcharhinidae, Chaenogaleus, Eogaleus, Hemigaleidae, Isogomphodon, Leptochariidae, Pachygaleus, Paratriakis, Prionace, Proscylliidae, Protoscyliorhinus, Pseudotriakidae, Pterolamiops, Scyliorhinidae, Squatigaleus, Triakidae, Triakis
Subtaxa: none
Ecology: nektonic carnivore