Saurischia


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Saurischia

an order of dinosaurs lacking a post-pelvic bone and having a normal PELVIC GIRDLE, unlike Ornithischia. The group includes the large four-footed dinosaurs such as Diplodocus.
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Sus variadas formas hicieron que los cientificos los dividieran en dos grandes grupos dependiendo principalmente de la forma que presentaban sus caderas: por un lado los Ornithischia (cadera de ave) y por otro, los Saurischia (cadera de lagarto).
Here is some background information on the Chinese dinosaurs, who, like other dinos, belong to two orders: Ornithischia (bird-hipped), which were four-legged plant-eaters and Saurischia (lizard-hipped), which included two-legged meat-eaters (theropods) and four-legged plant-eaters (sauropods).
von (1932): Die fossil Reptil-Ordnung Saurischia, ihre Entwicklung und Geschichte.