Dimetrodon
"Two-measures Tooth"

      Dimetrodon was not a dinosaur, but a meat eating pelycosaur, who lived over 280 million years ago!

      ANATOMY
The dimetrodon reached 11.5 feet (3.5 m) long and weighed about 550 pounds (250 kg). Its fossils have been found in
North America. It had a large sail-like flap of skin along its back, dense with blood vessels. It was supported by long,
bony spines, each of which grew out of a separate spinal vertabra. This flap might have been a thermoregulatory
structure, used to absorb and release heat, for mating and dominance rituals, and/or for making it look much larger than
it was to predators.

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Daniel Berry