New Fossil Takes A Bite Out Of Theory That Sharks Barely Evolved

Sharks have looked more or less the same for hundreds of millions of years. But a newly discovered fossil suggests that under the hood, a modern shark is very different from its ancient ancestors.

The finding, published in the journal Nature, strongly implies that sharks are not the “living fossils” many paleontologists once thought they were. “They have evolved through time to improve upon the basic model,” says John Maisey, a paleontologist at the American Museum of Natural History who helped identify the fossil.”

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