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...
17 KB (1,871 words) - 04:56, 16 June 2024
largest clade that includes Haptodus baylei, Haptodus garnettensis and Sphenacodon ferox, but not Edaphosaurus pogonias". They first appear during the Late...
7 KB (455 words) - 19:19, 14 April 2024
contrast, Sphenacodon and Ctenospondylus have a lower dorsal crest formed from flat, blade-like neural spines, relatively low in Sphenacodon and taller...
16 KB (1,706 words) - 08:39, 26 June 2024
large (~3 meters) and advanced members of this group (Ctenospondylus, Sphenacodon, Secodontosaurus and Dimetrodon) are distinguished by a tall sail along...
8 KB (694 words) - 21:49, 4 January 2024
small region of North America, while a smaller sphenacodontid called Sphenacodon dominated the western area. While this seaway probably did exist, the...
81 KB (9,042 words) - 18:39, 27 June 2024
scientifically updated form (with a long tail) alongside Dimetrodon and Sphenacodon to represent the Permian period in his famous The Age of Reptiles mural...
36 KB (4,254 words) - 13:03, 23 May 2024
much smaller. Well-known pelycosaurs include the genera Dimetrodon, Sphenacodon, Edaphosaurus, and Ophiacodon. Pelycosaur fossils have been found mainly...
12 KB (1,185 words) - 15:48, 24 March 2024
Lepidodendron Sigillaria Permian Seymouria Limnoscelis Varanosaurus Ophiacodon Sphenacodon Araeoscelis Dimetrodon Edaphosaurus Cordaites Triassic Saltoposuchus...
8 KB (788 words) - 21:03, 28 June 2024
skull, and looked much like the Sphenacodontids, such as Dimetrodon and Sphenacodon. Its temporal fenestrae were larger than those of the Sphenacodontids...
3 KB (226 words) - 03:06, 30 December 2023
fossil skeleton Diasparactus diadectid reptiliomorph fossil skeleton Sphenacodon synapsid fossil skeleton Varanops varanopid synapsid fossil skeleton...
78 KB (6,692 words) - 17:00, 3 June 2024
Ctenospondylus Cutleria? Dimetrodon Eosyodon Macromerion Neosaurus Secodontosaurus Sphenacodon Steppesaurus? Tappenosaurus? Tetraceratops? Therapsida see below↓...
16 KB (1,348 words) - 19:08, 9 May 2024
Ctenospondylus Cutleria? Dimetrodon Eosyodon Macromerion Neosaurus Secodontosaurus Sphenacodon Steppesaurus? Tappenosaurus? Tetraceratops? Therapsida see below↓...
28 KB (2,745 words) - 20:33, 9 July 2024
Ctenospondylus Cutleria? Dimetrodon Eosyodon Macromerion Neosaurus Secodontosaurus Sphenacodon Steppesaurus? Tappenosaurus? Tetraceratops? Therapsida see below↓...
6 KB (509 words) - 15:41, 28 April 2024
Ctenospondylus Cutleria? Dimetrodon Eosyodon Macromerion Neosaurus Secodontosaurus Sphenacodon Steppesaurus? Tappenosaurus? Tetraceratops? Therapsida see below↓...
78 KB (8,362 words) - 22:08, 28 May 2024
to sand dunes. Local wildlife included Edaphosaurus, Ophiacodon, and Sphenacodon. Triassic New Mexico had a seasonal climate and was home to a richly...
31 KB (3,725 words) - 06:00, 13 June 2024
puercensis Williston and Case, 1913, identified as a junior synonym of Sphenacodon ferox Marsh (Reptilia, Pelycosauria)". Canadian Journal of Earth Sciences...
33 KB (1,723 words) - 22:12, 26 September 2023
Ctenospondylus Cutleria? Dimetrodon Eosyodon Macromerion Neosaurus Secodontosaurus Sphenacodon Steppesaurus? Tappenosaurus? Tetraceratops? Therapsida see below↓...
6 KB (305 words) - 21:09, 12 August 2023
Ctenospondylus Cutleria? Dimetrodon Eosyodon Macromerion Neosaurus Secodontosaurus Sphenacodon Steppesaurus? Tappenosaurus? Tetraceratops? Therapsida see below↓...
13 KB (1,507 words) - 16:29, 28 November 2023
Ctenospondylus Cutleria? Dimetrodon Eosyodon Macromerion Neosaurus Secodontosaurus Sphenacodon Steppesaurus? Tappenosaurus? Tetraceratops? Therapsida see below↓...
8 KB (550 words) - 15:40, 28 April 2024
Ctenospondylus Cutleria? Dimetrodon Eosyodon Macromerion Neosaurus Secodontosaurus Sphenacodon Steppesaurus? Tappenosaurus? Tetraceratops? Therapsida see below↓...
7 KB (850 words) - 19:34, 28 May 2024
Ctenospondylus Cutleria? Dimetrodon Eosyodon Macromerion Neosaurus Secodontosaurus Sphenacodon Steppesaurus? Tappenosaurus? Tetraceratops? Therapsida see below↓...
15 KB (1,493 words) - 14:55, 8 July 2024
Ctenospondylus Cutleria? Dimetrodon Eosyodon Macromerion Neosaurus Secodontosaurus Sphenacodon Steppesaurus? Tappenosaurus? Tetraceratops? Therapsida see below↓...
9 KB (892 words) - 15:44, 28 April 2024
skeleton with skull. The spines of Ctenospondylus are longer than those of Sphenacodon but shorter than those of Dimetrodon. They also lack the dumbbell-shaped...
6 KB (676 words) - 03:22, 4 June 2024
Sphenacodon spp. Ctenospondylus spp. Dimetrodon spp....
8 KB (741 words) - 15:20, 6 April 2024
Eupelycosauria belonging to the Sphenacodontidae, related to Dimetrodon and Sphenacodon, from the Late Permian San Angelo Formation of Texas. A maxilla and dentary...
2 KB (236 words) - 21:18, 20 September 2021
Ctenospondylus Cutleria? Dimetrodon Eosyodon Macromerion Neosaurus Secodontosaurus Sphenacodon Steppesaurus? Tappenosaurus? Tetraceratops? Therapsida see below↓...
2 KB (113 words) - 20:07, 14 November 2023