Compsocerops

Koolasuchus is an extinct genus of brachyopoid temnospondyl in the family Chigutisauridae. Fossils have been found from Victoria, Australia and date back 125-120 million years ago to Barremian-Aptian stages of the Early Cretaceous. Koolasuchus is the youngest known temnospondyl. It is known from several fragments of the skull and other bones such as vertebrae, ribs, and pectoral elements. The type species Koolasuchus cleelandi was named in 1997. K. cleelandi was adopted as the fossil emblem for the state of Victoria, Australia on 13 January 2022.

Metoposaurus meaning "front lizard" is an extinct genus of stereospondyl temnospondyls, known from the Late Triassic of Germany, Italy, Poland, and Portugal. This mostly aquatic animal possessed small, weak limbs, sharp teeth, and a large, flat head. This highly flattened creature mainly fed on fish, which it captured with its wide jaws lined with needle-like teeth. Many Metoposaurus mass graves have been found, probably from creatures that grouped together in drying pools during drought.

The Stereospondyli are a group of extinct temnospondyl amphibians that existed primarily during the Mesozoic period. They are known from all seven continents and were common components of many Triassic ecosystems, likely filling a similar ecological niche to modern crocodilians prior to the diversification of pseudosuchian archosaurs.

The Santa Maria Formation is a sedimentary rock formation found in Rio Grande do Sul, Brazil. It is primarily Carnian in age, and is notable for its fossils of cynodonts, "rauisuchian" pseudosuchians, and early dinosaurs and other dinosauromorphs, including the herrerasaurid Staurikosaurus, the basal sauropodomorphs Buriolestes and Saturnalia, and the lagerpetid Ixalerpeton. The formation is named after the city of Santa Maria in the central region of Rio Grande do Sul, where outcrops were first studied.

Chigutisauridae is an extinct family of large temnospondyls. The only genera recognized as belonging to Chigutisauridae at the current time are all from Gondwana. Chigutisaurids first appeared during the Early Triassic in Australia. During the Late Triassic they became widely distributed in Gondwana, with fossils found in South Africa, India and South America. Koolasuchus from the Early Cretaceous of Australia represents the youngest known temnospondyl.

Pelorocephalus is an extinct genus of chigutisaurid temnospondyls. It is known from the Late Triassic (Carnian) Cacheutá Formation of the Cuyo Basin and the Ischigualasto Formation of the Ischigualasto-Villa Unión Basin, both in northwestern Argentina. Four species are currently recognized: the type species P. mendozensis, which was named in 1944, P. tenax, which was named in 1949 as a species of Chigutisaurus and reassigned to Pelorocephalus in 1999, and P. cacheutensis, which was named in 1953 as another species of Chigutisaurus and reassigned to Pelorocephalus along with P. tenax. A fourth species, P. ischigualastensis, was named in 1975 after the formation it was found in. The species P. tunuyanensis was named in 1948 but has since been synonymized with P. mendozensis.

Siderops is an extinct genus of chigutisaurid temnospondyl from Early Jurassic of Australia, containing the species S. kehli.

Brachyopoidea is a superfamily of temnospondyls that lived during the Mesozoic. It contains the families Brachyopidae and Chigutisauridae. The earliest records of brachyopids are from the Lower Triassic in Australia. The latest-surviving member of the superfamily is the chigutisaurid Koolasuchus from the Early Cretaceous of Australia.

Brachyopidae is an extinct family of temnospondyls. They evolved in the early Mesozoic and were mostly aquatic. A fragmentary find from Lesotho, Africa is estimated to have been 7 metres (23 ft) long, the largest amphibian ever known to have lived besides Prionosuchus and Mastodontosaurus. Brachyopids were the only group of temnospondyls to survive into the Jurassic aside from their sister family Chigutisauridae. With records of the family from the Jurassic of Asia.

Keratobrachyops is an extinct genus of trematosaurian temnospondyl found in the Arcadia Formation of Queensland, Australia. It had been thought to be a basal chigutisaurid but is now thought to be a basal brachyopomorph closely related to the genus Bothriceps, and may even be a synonym of it.

Sangaia is an extinct genus of rhytidosteid temnospondyl from the early Triassic period of Rio Grande do Sul, Brazil. It is known from the holotype UMVT 4302, the left half of a partial skull, a partial palate, from the paratype UMVT 4303, a partial right palatal fragment and from the referred specimens PV 0497 T and MCN PV 2606, skull fragments, recovered from the Sanga do Cabral Formation in the Rośario do Sul Group.

Vigilius is an extinct genus of brachyopid temnospondyl amphibian from the Triassic of Arizona. It is known from the single type species Vigilius wellesi.

Sanjukta Chakravorti is a geologist and palaeobiologist. She completed her PhD from the Geological Studies Unit, Indian Statistical Institute Kolkata, India where she is an Honorary Visiting Scientist. Her research focuses on Gondwanan Geology and Triassic temnospondyl amphibians from India. She also actively works on palaeoecology and palaeobiology of marine vertebrates in India. Sanjukta currently conducts her research at the State Museum of Natural History Stuttgart.

Venetoraptor is an extinct genus of lagerpetid archosaurs from the Late Triassic Santa Maria Formation of Rio Grande do Sul, Brazil. The genus contains a single species, V. gassenae, known from a partial skeleton.

Arenaerpeton is an extinct genus of chigutisaurid temnospondyl found in the Terrigal Formation of New South Wales, Australia. The type species is A. supinatus. The genus name is derived from the Latin "Arena", meaning "sand" ; and "erpeton" meaning thing that creeps. The species name "supinatus" means "supine", referring to the fact that the fossil is lying on its back.