Heavy rains in southern Brazil have exposed the remains of one of the world's oldest dinosaurs, researchers say.
Paleontologists found the fossils next to a reservoir in the municipality of São João do Polêsine in May, The Associated Press reported on July 17. The team claims that the dinosaur, which has yet to be formally identified, is around 233 million years old and belonged to a family of Triassic predators called Herrerasauridae.
