Patrick Pester is a freelance writer and previously a staff writer at Live Science. His background is in wildlife conservation and he has worked with endangered species around the world. Patrick holds a master's degree in international journalism from Cardiff University in the U.K.
Heavy rains in southern Brazil have exposed the remains of one of the world's oldest dinosaurs, researchers say.
Scientists are still debating evidence from the earliest-known dinosaurs. The oldest undisputed dinosaur fossils are around 231 million years old and include bones from a few different groups, including Herrerasauridae. However, there are also older fossils from a disputed dinosaur called Nyasasaurus, which lived around 240 million years ago.
"It's among the oldest in the world" and will likely play a role in"helping us understand the origin of the dinosaurs," Rodrigo Temp Müller, a paleontologist at the Federal University of Santa Maria in Brazil who led the excavation, told Agência Brasil.
By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over."It's a carnivorous, bipedal animal, so it walked on its hind legs and probably had its hands free to handle prey," Müller said."We can't say it had reached its maximum size. Although he was 2.5m long, some individuals in this group could reach five or six meters .
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