Word: ischigualasto
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Dates: during 1993-1993
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...knows what the very first true dinosaur looked like, but a young paleontologist named Paul Sereno of the University of Chicago has come closer than anyone else to finding out. In 1991, working with Argentine scientists in Ischigualasto Provincial Park at the edge of the Andes, he unearthed one of the oldest dinosaur fossils ever found. The animal, now known as Eoraptor, was a carnivore that dates from 230 million years ago. Like the much later Tyrannosaurus, the Eoraptor belonged to the saurischian, or lizard-hipped, category of dinosaurs. (The name refers to the arrangement of its pelvic bones...
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