Chordata [phylum]
(1570 species)

Elasmobranchii [class] (113)

Carcharhiniformes [order] (38)

Hexanchiformes [order] (4)

Lamniformes [order] (9)

Myliobatiformes [order] (19)

Orectolobiformes [order] (2)

Rajiformes [order] (15)

Rhinopristiformes [order] (5)

Squaliformes [order] (17)

Squatiniformes [order] (1)

Torpediniformes [order] (3)