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dimetrodon

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dimetrodon  (d-mtr-dn)
An extinct, carnivorous reptile of the genus Dimetrodon of the Permian Period having a body similar to an alligator's but with a tall, curved sail on its back. The sail had a thick network of blood vessels and may have been used to regulate the animal's body temperature. The dimetrodon belonged to the synapsids, an early group of reptiles that was ancestral to mammals.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.dimetrodondimetrodon - carnivorous dinosaur of the Permian in North America having a crest or dorsal sail
synapsid, synapsid reptile - extinct reptile having a single pair of lateral temporal openings in the skull
genus Dimetrodon - a reptile genus of Pelycosauria


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A top predator in the basin's food chain was likely Dimetrodon, a carnivorous reptile whose fossils were found in Europe for the first time at this quarry, Berman notes.
Early Biped Fossil Pops Up in Europe by Perkins, S. / Science News
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