11-05-2023, 04:32 PM
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Senior Member
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Join Date: Mar 2017
Location: ABQ, New Mexico
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Helicoprion, or the "buzz saw sharks," was a group of shark-like fish with a spiral jaw that made their teeth resemble the edge of a buzz saw. They inhabited Earth's oceans from the Devonian period (419.2 million to 358.9 million years ago) to the Triassic period, according to the Australian Museum(opens in new tab). Fossil records indicate that these fish grew up to around 25 feet (7.7 m) long, making them 5 feet (1.5 m) longer than the largest known modern great white sharks (Carcharodon carcharias).
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