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Stethacanthus

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NTamura
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Description

Stethacanthus (now Akmonistion) zangerli was a primitive shark from the Carboniferous of Scotland. The second part of the paleozoic saw the emergence of a number of extremely weird-looking sharks, including this one. The first dorsal fin had the shape of an anvil. The function of this bizzare organ is debated. The fish measured about 70 cm long.
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Comments6
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Undistilled's avatar
Undistilled
We still have some of these weird sharks around today - like the hammerhead. They're pretty awesome, provided you're not bleeding in the water with one.

:)