Pelycosaur (/ˈpɛlɪkəˌsɔːr/ PEL-ih-kə-sor) is an older term for basal or primitive Late Paleozoic synapsids, excluding the therapsids and their descendants...

This list of pelycosaurs is an attempt to create a comprehensive listing of all genera that have ever been included in the synapsida excluding therapsida...

systematics, and non-therapsid synapsids were also referred to as pelycosaurs, or pelycosaur-grade synapsids. These paraphyletic terms have now fallen out...

commonly called "pelycosaurs", specifically within the Sphenacodontia, more than 279.5 million years ago. They replaced the pelycosaurs as the dominant...

glaciation. Hot and dry climate. A possible drop in oxygen levels. Synapsids (pelycosaurs and therapsids) become widespread and dominant, while parareptiles and...

from a "pelycosaur" ancestor (a poorly defined group including all synapsids which are not therapsids). The therapsid takeover from pelycosaurs took place...

(Cisuralian) saw a major faunal turnover, with most lineages of primitive "pelycosaur" synapsids becoming extinct, being replaced by more advanced therapsids...

the earliest sauropsid reptiles (Hylonomus), and the earliest known "pelycosaur" synapsids (Archaeothyris). Small lizard-like animals quickly gave rise...

Comparison of cheek teeth in various taxa: 1, a single-cusped pelycosaur; 2, Dromatherium (a Triassic cynodont); 3, Microconodon (a Triassic eucynodont);...

constitutes the larger Amniota clade. Early synapsids are referred to as "pelycosaurs." The more advanced therapsids became dominant during the Guadalupian...

faunas were dominated by pelycosaurs (a paraphyletic group of early synapsids), diadectids, and temnospondyls, The pelycosaurs appeared during the Late...

37 (13): 385–401. Sternberg, C.W. (1942). "The skeleton of an immature pelycosaur, Dimetrodon cf. grandis, from the Permian of Texas". Journal of Paleontology...

groups, synapsids and sauropsids, date from around 313 Ma. The synapsid pelycosaurs and their descendants the therapsids are the most common land vertebrates...

(reptiles, including dinosaurs and therefore birds) and synapsids (extinct pelycosaurs, therapsids and all extant mammals, including humans). Some tetrapods...

evidence for soft tissues. Skin impression of the belly and lower tail of a pelycosaur, possibly Haptodus shows the basal synapsid stock bore transverse rows...

body temperature of the animal, in a similar way to the sails of the pelycosaurs Dimetrodon and Edaphosaurus (and modern elephant and rabbit ears). The...

This list of nicknamed non-dinosaur fossils is a list of non-dinosaurian fossil specimens given informal names or nicknames, in addition to their institutional...

originally considered a suborder of pelycosaurs or "mammal like reptiles", but it was redefined in 1997, and the term pelycosaur itself has fallen into disfavor...

birds) and synapsids (including mammals and extinct ancestors like "pelycosaurs" and therapsids), an event that marks the appearance of Amniota, according...

characteristics (e.g. no secondary palate, small dentary) shared with their pelycosaur ancestors, although they are also more advanced in possessing therapsid...

temnospondyl amphibians and pelycosaurs (e.g. Dimetrodon) diversify in species. 275 Ma Therapsid synapsids separate from pelycosaur synapsids. 265 Ma Gorgonopsians...

and chelonia (turtles and relatives) Synapsida – one low fenestra – pelycosaurs and therapsids (the 'mammal-like reptiles') Euryapsida – one high fenestra...

publication of two of the best-known fossil taxa described by Cope: the pelycosaur Edaphosaurus in 1882 and the early dinosaur Coelophysis in 1889. In 1889...

Assemblage Zone is the youngest known varanopid and the last member of the "pelycosaur" group of synapsids. No known varanopids developed a sail like Dimetrodon...

Comparison of cheek teeth in various taxa: 1, a single-cusped pelycosaur; 2, Dromatherium (a Triassic cynodont); 3, Microconodon (a Triassic eucynodont);...

many respects, the pelycosaurs are intermediate between the reptiles and mammals" http://www.ucmp.berkeley.edu/synapsids/pelycosaurs.html Berkeley University...

diversified into a number of groups, including several families of synapsid pelycosaurs, protorothyridids, captorhinids, saurians and araeoscelids. The amphibian-like...

are now thought to have separately evolved from diapsid ancestors). Pelycosaurs died out before the end of the Permian. Too few Permian diapsid fossils...

large, advanced, carnivorous, Late Pennsylvanian to middle Permian "pelycosaurs". The most recent one, Dimetrodon angelensis, is from the latest Kungurian...

Pennsylvanian and Cisuralian evolutionary radiation (often still called "pelycosaurs", though this is a paraphyletic group) by therapsids occurred around...