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Squaliformes

Squaliformes

Scientific classification

Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Order:	Squaliformes

Families

Squalidae[?] (dogfish sharks)
Centrophoridae (gulper sharks)
Dalatiidae[?] (sleeper sharks)
Echinorhinidae[?] (bramble sharks)

Squaliformes is an order of sharks that includes the dogfish sharks[?] and others, about 80 species in four families.

Members of the order have two dorsal fins[?], no anal fin[?], and no nictitating membrane[?]. They have five gill slits[?].

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