Taxa named by Llewellyn Ivor Price

Varanopidae is an extinct family of amniotes known from the Late Carboniferous to Middle Permian that resembled monitor lizards (with the name of the group deriving from the monitor lizard genus Varanus) and may have filled a similar niche. Typically, they are considered to be relatively basal synapsids (and thus more closely related to mammals than to reptiles), although some studies from the late 2010s recovered them being taxonomically closer to diapsid reptiles; recent studies from the early 2020s support their traditional placement as synapsids on the basis of high degree of bone labyrint

Sphenacodontia is a stem-based clade of derived synapsids. It was defined by Amson and Laurin (2011) as "the largest clade that includes Haptodus baylei, Haptodus garnettensis and Sphenacodon ferox, but not Edaphosaurus pogonias". They first appear during the Late Pennsylvanian (Upper Carboniferous) epoch. From the end of the Carboniferous to the end of the Permian, most of them remained large, with only some secondarily becoming small in size.

Eothyrididae is an extinct family of very primitive, insectivorous synapsids. Only three genera are known, Eothyris, Vaughnictis and Oedaleops, all from the early Permian of North America. Their main distinguishing feature is the large caniniform tooth in front of the maxilla.

left|thumb|450x450px|Skeletal diagram and size comparison showing some of the different Baurusuchus specimens in scientific literature (human: 175 cm tall). Several more specimens have been discovered and stored in museums Baurusuchus is an extinct genus of baurusuchid mesoeucrocodylian, which lived in Brazil from 90 to 83.5 million years ago, in the Late Cretaceous period. It was a terrestrial predator, estimated to reach up to in weight. Baurusuchus lived during the Turonian to Santonian stages of the Late Cretaceous Period, in Adamantina Formation, Brazil. It gets its name from the Brazilia

left|thumb|Skull of Paleothyris Protorothyrididae is an extinct proposed family of small, lizard-like reptiliomorphs traditionally thought to be early members of "Eureptilia". Their skulls did not have the fenestrae seen in the more derived diapsids. Protorothyridids lived from the late Carboniferous to early Permian periods, in what is now North America.

genus of reptiles (fossil)

Cerritosaurus is a genus of proterochampsid archosauromorph from the Late Triassic. It has been found in the Santa Maria Formation, in the Geopark of Paleorrota, Brazil. It is represented by one species.

species of reptile (fossil)