These uncommon species are very challenging to research ... Goblin shark (Mitsukurina owstoni)Often referred to as the "living fossil," the Goblin Shark is one of the rarest and most unique ...

Researchers have discovered a fossil that shares characteristics of an ancient ancestor to sharks, the first such finding in Japan. A fossil of the blade-like part of the hybodus species was found ...

Japanese researchers helped identify a fossil uncovered in central Asia as a shark-toothed carnivorous ... about 90 million years ago. The new species was named “ulughbegsaurus” by the team ...