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Description
Dimetrodon is an extinct genus of non-mammalian synapsid that lived during the Cisuralian (Early Permian) , around 295–272 million years ago (Mya).[3] [4] [5] It is a member of the family Sphenacodontidae . The most prominent feature of Dimetrodon is the large neural spine sail on its back formed by elongated spines extending from the vertebrae . It walked on four legs and had a tall, curved skull with large teeth of different sizes set along the jaws. Most fossils have been found in the Southwestern United States , the majority coming from a geological deposit called the Red Beds of Texas and Oklahoma . More recently, fossils have been found in Germany . Over a dozen species have been named since the genus was first erected in 1878.

Description
Dimetrodon is an extinct genus of non-mammalian synapsid that lived during the Cisuralian (Early Permian) , around 295–272 million years ago (Mya).[3] [4] [5] It is a member of the family Sphenacodontidae . The most prominent feature of Dimetrodon is the large neural spine sail on its back formed by elongated spines extending from the vertebrae . It walked on four legs and had a tall, curved skull with large teeth of different sizes set along the jaws. Most fossils have been found in the Southwestern United States , the majority coming from a geological deposit called the Red Beds of Texas and Oklahoma . More recently, fossils have been found in Germany . Over a dozen species have been named since the genus was first erected in 1878.