“Astonishing Results” – Scientists Reveal Secrets of Mysterious 22-Million-Year-Old Dolphin Skull
A newly discovered dolphin species from 22 million years ago shows evidence of early echolocation, akin to modern dolphins' ...
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Whales & Dolphins
dolphins, and porpoises. Fossil evidence suggests that the cetaceans share a common ancestor with land-dwelling mammals that began living in marine environments around 50 million years ago.
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3D models show dolphins already used narrow-band sound waves for orientation 5 million years ago
The return of cetaceans from land to the water about 50 million years ... around 5.3 million years ago. "What is particularly exciting is that these dolphins changed their habitat once again ...
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When whales walked on four legs
Their land-dwelling ancestors lived about 50 million years ago. Meet Pakicetus, a goat-sized, four-legged creature that scientists recognise as one of the first cetaceans (the group of marine animals ...