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Unformatted text preview: Trachodon and Maiasaurus ), ceratopsians (such as Triceratops ), and the stegosaurians (including Stegosaurus and Ankylosaurus ). Mammals also evolved during the Triassic, at about the same time as the dinosaurs. However, Triassic mammals were small and inconsequential components of the Triassic ecosystems. The Triassic World Pangaea reached its greatest extent during the Triassic. The conditions from the Permian (dry continental interiors, few if any shallow marginal continental seas) continued. Around the middle of the Triassic the breakup of Pangaea began, with the supercontinent separating into two landmasses, Gondwana in the south (composed of the future continents of South America, Africa, India, Antarctica, and Australia) and Laurasia in the north (Asia and North America). The breakup of Pangaea also resulted in mountain-building along the western edges of North and South America....
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- Fall '10
- Biology, Triassic, Sauropods, Coelophysis