12 Million year old Leviathan discovered in Peruvian sediment

Researchers have discovered the fossilised remains of an ancient whale with huge, fearsome teeth. Writing in the journal Nature, the scientists have dubbed the 12 million-year-old creature "Leviathan".

It is thought to have been more than 17m long, and might have engaged in fierce battles with other giant sea creatures from the time. Leviathan was much like the modern sperm whale in terms of size and appearance.

But that is where the similarity ends. While the sperm whale is a relatively...