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 ...

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, finding that it was a previously undescribed ...

Bajii Yangtze dolphin 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 ...

Also declared extinct in 2006, the Chinese Yangtze river dolphin was a pale, putty-coloured mammal that looked rather less sleek and elegant than its sea-swimming cousins. Its plain looks hid a ...

A shark only just formally discovered might already be extinct - a fate no shark has yet suffered in the human era - while an Amazon river dolphin has become endangered, a Red List of species in ...