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Crowned by a towering spined sail, this Dimetrodon stands on sprawling clawed legs with its jaws parted to show two sizes of teeth. Each long sail spine rises in a dense comb along the back, the body carries rough, pebbled skin, and a thick tail tapers behind. Often mistaken for a dinosaur, the ancient synapsid makes a great lesson subject for a paleontology classroom, a bold display piece, or a fearsome beast on a prehistoric tabletop.

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