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The most enigmatic of the saurischian taxa is, however, Guaibasaurus candelariensis, previously regarded as either a basal theropod or a basal sauropodomorph This study provides a detailed anatomical revision of all specimens originally referred to G candelariensis by Bonaparte and coauthors, including its typeseries and a more recentlyGuaibasaurus, (meaning "Guaiba lizard"), was a basal Saurischian dinosaur genus which lived during the Triassic period Its fossils were found in the geopark of Paleorrota, Rio Grande do Sul, Brazil Like Herrerasaurus, this dinosaur had three full fingers and two vestigial ones on each hand The type species, G candelariai, was described by Jose Bonaparte and J Ferigolo in 1999 AlsoLate Triassic) is known from an articulated skeleton lacking a neck and skullOriginally considered a basal theropod, later studies allied it with basal sauropodomorphs Here this specimen nests as a basal theropod in a rarely studied clade In the large reptile tree (LRT