Scientists have found the oldest fossil of a giant tadpole ... goes back to the Early Jurassic period. Similar species existed in the Late Triassic, about 217 to 213 million years ago.

Stegosaurus, Allosaurus and Diplodocus are among the Jurassic Period’s most famous faces. But how dinosaurs went from a small ... During the Jurassic, it started splitting into two giant landmasses ...

This was the Jurassic, which took place 199 to 145 million years ago. At the start of the period, the breakup of ... and paddle-finned plesiosaurs, giant marine crocodiles, sharks, and rays.