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Squaliformes

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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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