His next stop was the dimetrodon, the progenitor of Mammalia. |
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This is the pattern seen in the dorsal fins of fishes, in Dimetrodon and among iguanid lizards. |
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A characteristic pelycosaur was Dimetrodon, a large predator from the Permian of Texas. |
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Dimetrodon and its cousins do, indeed, seem to have met their fate at the hands of a huge impact, with a background of massive volcanic eruptions, just like the dinosaurs. Yet there is a niggling worry in all this. |
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All too often books written for a popular audience include animals such as mammoths, mastodons, plesiosaurs, ichthyosaurs, and the sail-backed Dimetrodon. |
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Creatures such as Dimetrodon and Edaphosaurus ruled the new continent. |
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