Scientists have discovered the 16-million-year-old remains of the “largest river dolphin ever found” after unearthing a huge fossilised skull in the Amazon. Named Pebanista yacuruna ...

Studies of a skull fragment have revealed it to be from an ancient dolphin Research was led by Mizuki Murakami of the Waseda University in Japan The fossil was first found in 1970 but its origin ...

And though there are Amazonian freshwater dolphin species alive today, they aren’t close kin to that ancient cetacean. Its closest living relatives are river dolphins living more than 6,000 ...

Peruvian paleontologists have revealed a 9-million-year-old fossil belonging to an ancestor of the great white shark.