They went extinct around 260 million years ago ... Genetically, they were very closely linked to the sharks of today! These sharks lived all around the world until about 80 million years ago.

Fossil teeth of extinct megalodon sharks have grooves made by other megalodon teeth, hinting at violent encounters between ...

The IUCN update grimly notes that the first shark or ray species may already have gone extinct. The lost shark (Carcharhinus obsoletus) was classified as critically endangered (possibly extinct), ...

Now, all that remains of the magnificent ... Mako sharks are the best living representation of its extinct cousin, albeit much smaller. “A mako shark would look puny next to a megalodon ...

Scientists have discovered that the long-extinct megalodon, also known as the megatooth shark, had a body temperature 7 degrees Celsius warmer than the surrounding seawater. This information might ...

A shark only just formally discovered might already be extinct - a fate no shark has yet ... the Tucuxi to its endangered list, meaning that all of the world's freshwater dolphins are now ...