Pelorocephalus

Pelorocephalus (meaning "monstrous head" in Greek) is an extinct genus of chigutisaurid temnospondyls 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. Three 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.[1] The largest individuals are estimated to have been over 107 centimetres (42 in) in length, with a skull width of around 55 centimetres.[2][3]

Pelorocephalus Temporal range: Carnian
Skull of Pelorocephalus mendozensis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Amphibia
Order:	†Temnospondyli
Suborder:	†Stereospondyli
Family:	†Chigutisauridae
Genus:	†Pelorocephalus Cabrera 1944
Type species
Pelorocephalus mendozensis Cabrera 1944
Species
†P. cacheutensis (Rusconi 1953) (originally Chigutisaurus cacheutensis) †P. ischigualastensis Bonaparte 1975 †P. mendozensis Cabrera 1944 (type) †P. tenax (Rusconi 1949) (originally Chigutisaurus tenax)

Life restoration of Pelorocephalus tenax