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| - Edaphosaurus was a pelycosaur from the Permian. It was the first plant-eating reptile to evolve.
- Edaphosaurus is an herbivorous synapsid that lives within the Lost Valley.
- Edaphosaurus was the first herbivorous reptile to evolve. Edaphosaurus was one of the earliest mammal-like reptile, namely a Pelycosaur. Dimetrodon was a carnivourus pelycosaur, and had many similiarities with Edaphosaurus, including a sail fin. This fin was likely used in attracting a mate, a flashy display to ward off predators and to control its temperature. Plants aren't easy to digest, but Edaphosaurus evolved a stomach that could cope with such hard material. It also swallowed stones to help the digestion process.
- Edaphosaurus is important as one of the earliest known large plant-eating (herbivorous) amniote tetrapods (four-legged land-living vertebrates). In addition to the large tooth plates in its jaws, the most characteristic feature of Edaphosaurus is a sail on its back. A number of other synapsids from the same time period also have tall dorsal sails, most famously the large apex predator Dimetrodon. However, the sail on Edaphosaurus is different in shape and morphology. The first fossils of Edaphosaurus came from Texas in North America, with later finds in New Mexico, Oklahoma, and West Virginia. Fragmentary fossils attributed to Edaphosaurus also have been found in the Czech Republic and in Germany in Central Europe.
- The earliest known species are known from fragmentary remains of small animals from late Carboniferous. Successive species increased in size during the Early Permian period, until they attained about 3.2 meters in length, as represented by the species Edaphosaurus cruciger and Edaphosaurus pogonias. These large species are distinguished by the cervical and anterior thoracic neural spines bearing large club-like sidebars.
- thumb|400pxEl Edaphosaurus era el primer gran reptil, de 3 metros de longitud, que vivió en el Carbonífero superior y el Pérmico inferior. Tenía una cabeza bastante pequeña, con dientes en forma de hoja que usaba para roer la vegetación de la que se alimentaba. Como era un reptil, no podía masticar al igual que las vacas, sino que se limitaba a tragar grandes trozos de plantas. Tenía una larga cola y las patas arqueadas, de la mimsa forma que las lagartijas. Tenía una gran vela dorsal formada por la prolongación de las vértebras de la espalda, y entre ellas, había una piel bastante irrigada que, cuando la sangre pasaba por esa zona, regulaba la temperatura del cuerpo: si la vela apuntaba hacia el sol, el animal se calentaba, y si estba de cara al viento, el animal se enfriaba. Esta vela le
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