Squaliformes

Squalidae (dogfish sharks)

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Centrophoridae (gulper sharks)

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Dalatiidae (sleeper sharks)

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Echinorhinidae (bramble sharks)

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

Related Topics:
Order - Shark - Smooth dogfish - Spiny dogfish

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

Related Topics:
Dorsal fin - Anal fin - Nictitating membrane - Gill slit

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