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; subclass Elasmobranchii, order Heterodontiformes)

A small family of marine sharks that have two dorsal fins each preceded by a stout spine, and eyes protected by a dorsal ridge marking the otherwise blunt head profile. These sharks are bottom-dwelling and fairly slow-moving animals, feeding on molluscs, crabs, etc. There are about six species, occurring in the Indo-Pacific region.

Subjects: Zoology and Animal Sciences.

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