Scientists have discovered a new species of dinosaur — one that was dog-sized and roamed what is now the United States around 150 million years ago alongside familiar dinosaurs like stegosaurus and diplodocus.

Scientists have identified a new species of pterosaur from a fossilised jawbone discovered deep in the Arizona desert. The find, in the Grand Canyon State's Petrified Forest National Park, marks the oldest-known pterosaur species in North America.

A newly discovered species of dinosaur is now on display at London’s Natural History Museum . Researchers have named this new species Enigmacursor mollyborthwickae, a speedy, two-legged herbivore, 64 centimetres tall and 180 cm long that lived about 145 million to 150 million years ago,