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Friday, February 6, 2009
All large land reptiles from prehistoric times were dinosaurs
Terrestrial reptiles reached 5 metres in length before the first dinosaurs evolved 230 million years ago. Some - such as sail-backed Dimetrodon, which flourished in North America during the Permian period (290 to 240 million years ago) - were related to dinosaurs, but were not true dinosaurs.
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@ 12:38 AM
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