Fossilized whale skull shows sonar existed 32 million years ago

In a study published in Nature this week, researchers now say that a fossilized whale skull discovered outside Charleston, SC presents all the tell-tales signs related to echolocation in present-day toothed whales, dolphins, and porpoises. The skull is approximately 28 million years old, belonged to what’s now the oldest known creature to use echolocation to hunt.

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