This week we’ll learn about some terrifying extinct fish, the armored dunkleosteus and the spiral-toothed helicoprion, plus a few friends of theirs who could TEAR YOU UP. Dunkleosteus did not even need teeth: Helicoprion had teeth like crazy in a buzzsaw-like tooth whorl: Helicoprion’s living relatives, chimaeras (or ghost sharks) are a lot less impressive ... [Read more...]
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