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Dinosaur find may be key to big reptiles’ evolution
JOHANNESBURG — A newly discovered dinosaur species that roamed Earth 200 million years ago may help explain how the creatures evolved into the largest animals on land, scientists in South Africa said. The Aardonyx celestae was a 23-foot-long, small-headed herbivore with a huge barrel chest. It walked on its hind legs but could drop to all fours. Scientists told reporters that the species could prove to be a missing link between plant-eating herbivores that walked on two legs and the massive sauropods or brontosaurs that went about on all fours. The findings were published Wednesday in the Proceedings of The Royal Society B, a London-based journal. — The Associated Press
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