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- Sphenacodon abstract "Sphenacodon (meaning "wedge point tooth") is an extinct genus of synapsid that lived from about 300 to about 280 million years ago (Ma) during the Late Carboniferous and Early Permian periods. Like the closely related Dimetrodon, Sphenacodon was a carnivorous member of the Eupelycosauria family Sphenacodontidae. However, Sphenacodon had a low crest along its back, formed from blade-like bones on its vertebrae (neural spines) instead of the tall dorsal sail found in Dimetrodon. Fossils of Sphenacodon are known from New Mexico and the Utah-Arizona border region in North America.Researchers currently recognize two species: Sphenacodon ferox (the type species) and Sphenacodon ferocior. Sphenacodon ferocior can be up to 40% larger in overall size (at about 3 m (10 ft) long) compared to Sphenacodon ferox (at about 2 m (6 ft long)). In addition, the dorsal spines in Sphenacodon ferocior are proportionately 45% taller than in Sphenacodon ferox. The recent discovery of a nearly complete skull of Sphenacodon ferox has helped clarify other distinctions between the two species, including the number of teeth in certain parts of the jaws and the size of the indented notch between the maxillary and premaxillary bones in the upper jaw. The two species occur together in some formations, but Sphenacodon ferox apparently survived later into the Early Permian.Sphenacodon and Dimetrodon typically have been found in different geographical areas that were separated by the ancient Hueco Seaway that penetrated equatorial Pangaea during the Early Permian and "covered much of southern New Mexico and parts of West Texas". Sphenacodon is known from the west in New Mexico, Arizona, and Utah, and Dimetrodon is known mainly from the east in Texas and Oklahoma in more deltaic environments. However, the species Dimetrodon occidentalis is found in New Mexico. Each genus would have been an apex land predator in its region and likely preyed on amphibians, diadectids, and early synapsids and diapsids. Sphenacodon appears to have died out before about 280 million years ago during the Wolfcampian. The genus Dimetrodon survived until about 270 million years ago. Such large sphenacodontid predators were later replaced by therapsids, the group of synapsids that includes the direct ancestors of mammals.".
- Sphenacodon thumbnail Sphenacodon_ferox_2.jpg?width=300.
- Sphenacodon wikiPageID "5047333".
- Sphenacodon wikiPageRevisionID "592364027".
- Sphenacodon authority "Marsh, 1878".
- Sphenacodon fossilRange "Cisuralian,".
- Sphenacodon hasPhotoCollection Sphenacodon.
- Sphenacodon imageCaption "Skeleton of Sphenacodon ferox in the Field Museum of Natural History.".
- Sphenacodon imageWidth "250".
- Sphenacodon name "Sphenacodon".
- Sphenacodon subdivision "* Sphenacodon ferox ( Marsh, 1878 ) * Sphenacodon ferocior ( Romer, 1937 ) * Sphenacodon britannicus ( )".
- Sphenacodon subdivisionRanks "Species".
- Sphenacodon synonyms "* Elcabrosaurus (Case, 1907) * Scoliomus (Williston and Case, 1913)".
- Sphenacodon subject Category:Permian_synapsids.
- Sphenacodon subject Category:Sphenacodonts.
- Sphenacodon type Animal100015388.
- Sphenacodon type Chordate101466257.
- Sphenacodon type LivingThing100004258.
- Sphenacodon type Object100002684.
- Sphenacodon type Organism100004475.
- Sphenacodon type PermianSynapsids.
- Sphenacodon type PhysicalEntity100001930.
- Sphenacodon type Reptile101661091.
- Sphenacodon type Synapsid101719403.
- Sphenacodon type Vertebrate101471682.
- Sphenacodon type Whole100003553.
- Sphenacodon type Reptile.
- Sphenacodon comment "Sphenacodon (meaning "wedge point tooth") is an extinct genus of synapsid that lived from about 300 to about 280 million years ago (Ma) during the Late Carboniferous and Early Permian periods. Like the closely related Dimetrodon, Sphenacodon was a carnivorous member of the Eupelycosauria family Sphenacodontidae. However, Sphenacodon had a low crest along its back, formed from blade-like bones on its vertebrae (neural spines) instead of the tall dorsal sail found in Dimetrodon.".
- Sphenacodon label "Sfenakodon".
- Sphenacodon label "Sphenacodon".
- Sphenacodon label "Sphenacodon".
- Sphenacodon label "Sphenacodon".
- Sphenacodon label "Sphenacodon".
- Sphenacodon label "Sphenacodon".
- Sphenacodon label "Sphenacodon".
- Sphenacodon label "Sphenacodon".
- Sphenacodon label "Сфенакодон".
- Sphenacodon label "楔齒龍屬".
- Sphenacodon sameAs Sphenacodon.
- Sphenacodon sameAs Σφηνακόδοντας.
- Sphenacodon sameAs Sphenacodon.
- Sphenacodon sameAs Sphenacodon.
- Sphenacodon sameAs Sphenacodon.
- Sphenacodon sameAs 스페나코돈.
- Sphenacodon sameAs Sphenacodon.
- Sphenacodon sameAs Sfenakodon.
- Sphenacodon sameAs Sphenacodon.
- Sphenacodon sameAs m.0d0dp8.
- Sphenacodon sameAs Q1050408.
- Sphenacodon sameAs Q1050408.
- Sphenacodon sameAs Sphenacodon.
- Sphenacodon wasDerivedFrom Sphenacodon?oldid=592364027.
- Sphenacodon depiction Sphenacodon_ferox_2.jpg.
- Sphenacodon isPrimaryTopicOf Sphenacodon.
