From Idaho to St. Petersburg, Across Eons, Resurrecting a Saw Tooth

Book review: Resurrecting the Shark, by Lisa Ewing Think of what a shark looks like. Think of the teeth, that unmistakable sign from nature: here is a predator. Now imagine those sharp, self-replacing teeth arranged not in rows but on a buzz-saw whorl, jutting from the shark's open mouth. The extinct shark Helicoprion had just that, and yes,... Continue Reading →

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