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horn shark

fish

Also known as: Heterodontus francisci

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bullhead sharks

In bullhead shark
…conduct population surveys of the horn shark (H. francisci) of the eastern Pacific Ocean, whitespotted bullhead shark (H. ramalheira) of the western Indian Ocean, and the Oman bullhead shark (H. omanensis) of the Persian Gulf and Arabian Sea.
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characteristics

In chondrichthyan: Reproduction and development
…less pillow-shaped; those of the horned sharks (Heterodontus francisci) are screw-shaped with a spiral flange. The eggs of chimaeras are elliptic, spindle-shaped, or tadpole-shaped and open to the exterior through pores and slits that permit entrance of water during incubation. An egg of the whale shark found in the Gulf…
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