Postcranial skeleton of a brachyopoid (Amphibia, Temnospondyli) from the Triassic of Mendoza (Argentina)

Fairly complete postcranial remains collected by Bonaparte in 1963 in Cerro Cacheuta, Mendoza Province (Argentina) are described in detail. The remains are referred to the Superfamily Brachyopoidea on account of the distinctive architecture of the clavicular dorsal process. The presence of longitudinal ridges on the neural spines and presumably the lack of posterior displacement of the neural spines are considered autapomorphies of the species from Mendoza. The presence of well developed pleurocentra and the lack of conspicuous parapophyses, which are also absent in the Jurassic chigutisaurid Siderops kehli, characterize the material described.