06.24.2005 - Revueltosaurus skeleton unearthed at Petrified Forest upsets dinosaur tale

06.24.2005 - Revueltosaurus skeleton unearthed at Petrified Forest upsets dinosaur tale: "Dinosaurs are divided into two main groups, the ornithischians and saurischians, both of which, based on fossil finds, appeared to arise in the Late Triassic, between 225 and 200 million years ago. The early ornithischians were thought to have evolved into animals such as the stegosaurs of the Jurassic and the frilled and duck-billed dinosaurs of the Cretaceous, while the saurischians split into the sauropodomorphs - the long-necked browsers like Brachiosaurus - and the carnivorous theropods, like T. rex. Only the theropods survive to the present as birds."

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