Capitosauria

Mastodonsaurus (meaning "teat tooth lizard") is an extinct genus of temnospondyl amphibian from the Middle Triassic of Europe. It belongs to a Triassic group of temnospondyls called Capitosauria, characterized by their large body size, large flattened skulls, and probably mainly aquatic lifestyles. Mastodonsaurus remains one of the largest amphibians known, and may have exceeded 6 meters (20 feet) in length.

Cyclotosaurus is an extinct genus of temnospondyl within the family Mastodonsauridae. It was of large size for an amphibian, having a skull length of about .

Paracyclotosaurus (meaning "Near Wheeled Lizard") is an extinct genus of temnospondyl, which would have appeared similar to today's salamander – but much larger, measuring up to long and weighing between . It lived in the Middle Triassic period, about 235 million years ago, and fossils have been found in Australia, India, and South Africa.

The Mastodonsauroidea are an extinct superfamily of temnospondyl amphibians known from the Triassic. Fossils belonging to this superfamily have been found in North America, Greenland, Europe, Asia, and Australia. Ferganobatrachus from the Jurassic of Asia was initially assigned to this superfamily, but is now considered to be congeneric with the brachyopid Gobiops.

Capitosaurus is an extinct genus of temnospondyl from the Late Triassic of Germany. Its skull was 30 cm long, with a total length over 122 cm. It was one of the first temnospondyl genera to have been erected, with the type species, C. arenaceus, originally described by Münster in 1836 based on a partial skull from the earliest Upper Triassic of Bavaria, Germany. Numerous other species were referred to Capitosaurus before the 1920s, but through much of the 20th century most authors considered the original specimen of C. arenaceus to be undiagnostic, effectively invalidating the genus

Parotosuchus is an extinct genus of capitosaurian temnospondyls within the family Mastodonsauridae. Fossils are known from the Early Triassic of Europe, Africa, Australia, and Antarctica. It was about long and likely lived in aquatic environments such as lakes and rivers. Parotosuchus was covered in a scaly skin, unlike the smooth skin of modern-day amphibians, and probably moved with an eel-like motion in the water.

Wetlugasaurus (meaning "Vetluga River lizard") is an extinct genus of temnospondyl from the Early Triassic (Olenekian) Charkabozh, Kzylsaiskaya, Petropavlovka, Kamennyi Yar and Vetluga Series Formations of northern Russia and Greenland. It had a long skull, and reached a total length of .

Mastodonsauridae is a family of capitosauroid temnospondyls. Fossils belonging to this family have been found in North America, Greenland, Europe, Asia, and Australia. The family Capitosauridae is synonymous with Mastodonsauridae.

Eryosuchus is an extinct genus of capitosauroid temnospondyl from the Middle Triassic of northern Russia. It was a very large predator: the largest specimen known could reach up to 3.5 m (11.5 ft) in length, with a skull over 1 m long.

Sclerothorax is an extinct genus of temnospondyl from the Early Triassic of Germany. It is distinguished from other temnospondyls by its short and very wide skull and the elongated neural spines that form a ridge along its back. Sclerothorax is a basal member of Capitosauria, a large clade of temnospondyls that lived throughout the Triassic.

Eocyclotosaurus (Greek 'èoos' = dawn, 'kyklos' = circle, 'ous' = ear ) is an extinct genus of mastodonsauroid temnospondyl from the Middle Triassic (Anisian). The name Eocyclotosaurus means "dawn round-eared lizard". It is characterized as a capitosauroid with a long and slender snout, closed otic fenestra, and small orbits. It measured over one metre and had a 22 cm skull.

Yuanansuchus is an extinct genus of mastodonsauroid temnospondyl. Fossils have been found from the Xinlingzhen formation in Yuan'an County, Hubei, China and date back to the Anisian stage of the Middle Triassic.

Cherninia is an extinct genus of mastodonsaurid temnospondyl known from the Denwa Formation of India and the Ntawere Formation of Zambia.

Xenotosuchus is an extinct genus of mastodonsaurid temnospondyl within the family Mastodonsauridae known from the Triassic of South Africa. The genus is based on a skull originally described as Parotosuchus, an animal which it resembled in general build and habit.

Capitosauria is an extinct group of large temnospondyl amphibians with simplified stereospondyl vertebrae. Mainly living as piscivores in lakes and rivers, the Capitosauria and its sister taxon Trematosauria were the only major labyrinthodonts that existed during the Mesozoic in ecological niches broadly similar to those of modern crocodiles, and some grew to very large sizes. At 6 meters in length, the Mid-Triassic Mastodonsaurus giganteus is not only thought to have been the largest capitosaur, but possibly also the largest amphibian to have lived. The latest known remains are from the Rhaet

Watsonisuchus is an extinct genus of temnospondyl from the Early Triassic of Australia, Madagascar, and South Africa. It was up to 122 cm long and had a robust skull of 24 cm in length.

Heylerosauridae is a family of mastodonsauroid temnospondyls. It was first named in 1980 to include the genera Odenwaldia and Quasicyclotosaurus. In addition to these genera, the family now includes Eocyclotosaurus and Yuanansuchus. Recent phylogenetic analyses have not found a close relationship between Odenwaldia and other heylerosaurids and place it outside the family. Heylerosaurids are generally regarded as the sister taxon of the stenotosaurids.

Jammerbergia is an extinct genus of mastodonsauroid temnospondyl within the family Mastodonsauridae. The only species is Jammerbergia formops, named in 2003 from the Cynognathus Assemblage Zone of South Africa.

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Antarctosuchus is an extinct genus of capitosauroid temnospondyl known from the Middle Triassic upper Fremouw Formation in the Transantarctic Mountains of Antarctica. It contains a single species, Antarctosuchus polyodon.

thumb|Restoration Edingerella is an extinct genus of temnospondyl amphibian from the Early Triassic of Madagascar. It is a basal capitosaur closely related to Watsonisuchus.