A new prehistoric dolphin species has been discovered, and it had excellent high-frequency hearing abilities that were similar to those of dolphins today. The animal lived around 22 million years ...

For decades, its identity remained obscure. Only recently were a pair of Smithsonian paleontologists able to trace its evolutionary origins, by X-ray scanning the fossil and building a digital model, ...

The Baiji Yangtze Dolphin is with all probability extinct reports a scientific expedition from the Institute for Hydrobiology Wuhan, China, and the Swiss-based baiji.org Foundation. During six ...

They evolved separately around 250 million years ago, possibly from a crocodile-like ancestor, to resemble fish and modern dolphins. Then, they went extinct around 94 million years ago.