Name: Dimetrodon

Means: Two-measures Tooth

Period: The Permian period 280-245 million years ago
Where: Texas and Oklahoma(USA), Nova Scotia, Canada

Quick description: Dimetrodon was a sail-backed, meat-eating animal that lived during the Permian Period, roughly 280 million years ago, long before the dinosaurs evolved, It was a so-called reptile, an ancestor of the mammals.Dimetrodon was about 11.5 feet(3.5m)long and weighed roughly 550 pounds(250 kg).It had a large sail-like flap of skin along its back, dense with blood vessels.The sail was supported by long, bony spines, each of which grew out of a separate spinal vertebra (a bone in the back).The sail may have been a thermoregulatory structure, used to absorb and release heat. The sail may have also been used for mating and dominance rituals, and/or for making it look much larger than it was to predators.Dimetrodon had sharp teeth and clawed feet.

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