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- Dimetrodon abstract "Dimetrodon (/daɪˈmiːtrədɒn/; meaning \"two measures of teeth\") is an extinct genus of synapsid that lived during the Early Permian period, around 295–272 million years ago (Ma). It is a member of the family Sphenacodontidae. The most prominent feature of Dimetrodon is the large 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 in Texas and Oklahoma. More recently, fossils have been found in Germany. Over a dozen species have been named since the genus was first described in 1878.Dimetrodon is often mistaken for a dinosaur or as a contemporary of dinosaurs in popular culture, but it went extinct some 40 million years before the first appearance of dinosaurs. Reptile-like in appearance and physiology, Dimetrodon is nevertheless more closely related to mammals than to modern reptiles, though it is not a direct ancestor or descendant of mammals.Dimetrodon is assigned to a group traditionally called \"mammal-like reptiles\"—more recently termed \"stem-mammals\" or \"non-mammalian synapsids\". That is, many vertebrate paleontologists today group Dimetrodon together with mammals in an evolutionary group, or clade, called Synapsida, while they place dinosaurs with living reptiles and birds in a separate clade, Sauropsida. Single openings in the skull behind each eye, known as temporal fenestrae, and other skull features distinguish Dimetrodon and mammals from most of the earliest sauropsids.Dimetrodon was probably one of the top predators in Early Permian ecosystems, feeding on fish and tetrapods, including reptiles as well as amphibians. Smaller Dimetrodon species may have had different ecological roles. The sail of Dimetrodon may have been used to stabilize its spine or to heat and cool its body as a form of thermoregulation. Some recent studies argue that the sail would have been ineffective at removing heat from the body, and was most likely used in sexual display.".
- Dimetrodon thumbnail Dimetrodon_incisivum_01.jpg?width=300.
- Dimetrodon wikiPageExternalLink Dimetrodon.
- Dimetrodon wikiPageExternalLink pelycosaurs.html.
- Dimetrodon wikiPageID "515343".
- Dimetrodon wikiPageLength "55074".
- Dimetrodon wikiPageOutDegree "211".
- Dimetrodon wikiPageRevisionID "706158695".
- Dimetrodon wikiPageWikiLink 1878_in_paleontology.
- Dimetrodon wikiPageWikiLink Acheloma.
- Dimetrodon wikiPageWikiLink Agger_nasi.
- Dimetrodon wikiPageWikiLink Albertosaurus.
- Dimetrodon wikiPageWikiLink Alfred_Romer.
- Dimetrodon wikiPageWikiLink Allometry.
- Dimetrodon wikiPageWikiLink American_Museum_of_Natural_History.
- Dimetrodon wikiPageWikiLink Amniote.
- Dimetrodon wikiPageWikiLink Anapsid.
- Dimetrodon wikiPageWikiLink Anatomical_terms_of_location.
- Dimetrodon wikiPageWikiLink Apex_predator.
- Dimetrodon wikiPageWikiLink Archeria_(animal).
- Dimetrodon wikiPageWikiLink Articular_bone.
- Dimetrodon wikiPageWikiLink Basal_(phylogenetics).
- Dimetrodon wikiPageWikiLink Basiliscus_(genus).
- Dimetrodon wikiPageWikiLink Bone.
- Dimetrodon wikiPageWikiLink Canine_tooth.
- Dimetrodon wikiPageWikiLink Captorhinus.
- Dimetrodon wikiPageWikiLink Carnegie_Institution_for_Science.
- Dimetrodon wikiPageWikiLink Caseasauria.
- Dimetrodon wikiPageWikiLink Category:Cisuralian_synapsids.
- Dimetrodon wikiPageWikiLink Category:Cisuralian_synapsids_of_North_America.
- Dimetrodon wikiPageWikiLink Category:Permian_synapsids_of_Europe.
- Dimetrodon wikiPageWikiLink Category:Sphenacodonts.
- Dimetrodon wikiPageWikiLink Category:Transitional_fossils.
- Dimetrodon wikiPageWikiLink Charles_Hazelius_Sternberg.
- Dimetrodon wikiPageWikiLink Clade.
- Dimetrodon wikiPageWikiLink Cladistics.
- Dimetrodon wikiPageWikiLink Cladogram.
- Dimetrodon wikiPageWikiLink Class_(biology).
- Dimetrodon wikiPageWikiLink Clear_Fork_Group.
- Dimetrodon wikiPageWikiLink Clepsydrops.
- Dimetrodon wikiPageWikiLink Cortical_bone.
- Dimetrodon wikiPageWikiLink Cryptovenator.
- Dimetrodon wikiPageWikiLink Ctenospondylus.
- Dimetrodon wikiPageWikiLink Cutleria_(animal).
- Dimetrodon wikiPageWikiLink Deer.
- Dimetrodon wikiPageWikiLink Denver_Museum_of_Nature_and_Science.
- Dimetrodon wikiPageWikiLink Diadectes.
- Dimetrodon wikiPageWikiLink Diadectidae.
- Dimetrodon wikiPageWikiLink Diapsid.
- Dimetrodon wikiPageWikiLink Diastema.
- Dimetrodon wikiPageWikiLink Dimetrodon.
- Dimetrodon wikiPageWikiLink Dimetrodon_borealis.
- Dimetrodon wikiPageWikiLink Dimetrodon_milleri.
- Dimetrodon wikiPageWikiLink Dinosaur.
- Dimetrodon wikiPageWikiLink Diplocaulus.
- Dimetrodon wikiPageWikiLink Eardrum.
- Dimetrodon wikiPageWikiLink Ecological_niche.
- Dimetrodon wikiPageWikiLink Edaphosauridae.
- Dimetrodon wikiPageWikiLink Edaphosaurus.
- Dimetrodon wikiPageWikiLink Edward_Drinker_Cope.
- Dimetrodon wikiPageWikiLink Endothermic_process.
- Dimetrodon wikiPageWikiLink Epaxial_and_hypaxial_muscles.
- Dimetrodon wikiPageWikiLink Ermine_Cowles_Case.
- Dimetrodon wikiPageWikiLink Eryops.
- Dimetrodon wikiPageWikiLink Euramerica.
- Dimetrodon wikiPageWikiLink Everett_C._Olson.
- Dimetrodon wikiPageWikiLink Everglades.
- Dimetrodon wikiPageWikiLink Fauna.
- Dimetrodon wikiPageWikiLink Ferdinand_Broili.
- Dimetrodon wikiPageWikiLink Field_Museum_of_Natural_History.
- Dimetrodon wikiPageWikiLink Four_Corners.
- Dimetrodon wikiPageWikiLink Genus.
- Dimetrodon wikiPageWikiLink Haptodus.
- Dimetrodon wikiPageWikiLink Homeothermy.
- Dimetrodon wikiPageWikiLink Ianthodon.
- Dimetrodon wikiPageWikiLink Infratemporal_fenestra.
- Dimetrodon wikiPageWikiLink Jacob_Boll.
- Dimetrodon wikiPageWikiLink Linnaean_taxonomy.
- Dimetrodon wikiPageWikiLink Llewellyn_Ivor_Price.
- Dimetrodon wikiPageWikiLink Ludwig_Maximilian_University_of_Munich.
- Dimetrodon wikiPageWikiLink Malleus.
- Dimetrodon wikiPageWikiLink Mandible.
- Dimetrodon wikiPageWikiLink Mating.
- Dimetrodon wikiPageWikiLink Maxilla.
- Dimetrodon wikiPageWikiLink Middle_ear.
- Dimetrodon wikiPageWikiLink Most_recent_common_ancestor.
- Dimetrodon wikiPageWikiLink Museum_of_Comparative_Zoology.
- Dimetrodon wikiPageWikiLink Nasal_cavity.
- Dimetrodon wikiPageWikiLink Nature_(journal).
- Dimetrodon wikiPageWikiLink Nomen_dubium.
- Dimetrodon wikiPageWikiLink Occiput.
- Dimetrodon wikiPageWikiLink Olfactory_epithelium.
- Dimetrodon wikiPageWikiLink Ophiacodon.
- Dimetrodon wikiPageWikiLink Ophiacodontidae.
- Dimetrodon wikiPageWikiLink Othniel_Charles_Marsh.
- Dimetrodon wikiPageWikiLink Palaeos.
- Dimetrodon wikiPageWikiLink Pantelosaurus.
- Dimetrodon wikiPageWikiLink Pearce_River_Group.
- Dimetrodon wikiPageWikiLink Pennsylvanian_(geology).
- Dimetrodon wikiPageWikiLink Periosteum.