Scientists have discovered a dinosaur-like creature 10 million years older than the earliest known dinosaurs.
It's called Asilisaurus kongwe and it's a newly discovered herbivore - or vegetarian dinosaur - that lived about 245 million years ago!
The American scientists who found it say its age suggests dinosaurs were around earlier than previously thought.
Dr Randall Irmis said: "It was to dinosaurs much like chimps are to humans - kind of cousins."
Dr Irmis was one of the scientists working on the dinosaur project.
Asilisaurus stood up to 1m tall and walked on all fours
He also said that the creature wasn't what you'd expect a dinosaur cousin to look like.
"It was a weird little creature," he said. "We always thought the earliest relatives were small, bipedal [two-legged], carnivorous animals.
"These walked on four legs and had beaks and herbivore-like teeth."