Word: saurischian
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Dates: during 1993-1993
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...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; the other category of dinosaurs, which includes Stegosaurus and other herbivores, is labeled ornithischian, or bird-hipped. Ironically, birds are descended from the lizard-hipped class...
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