INVESTIGADORES
MARSICANO Claudia Alicia
artículos
Título:
Temnospondyl diversity of the Permian-Triassic Colonia Orozco Local Fauna (Buena Vista Formation) of Uruguay
Autor/es:
PIÑEIRO, GRACIELA; MARSICANO, CLAUDIA; GOSO, CESAR; MOROSI, ELIZABETH
Revista:
REVISTA BRASILEIRA DE PALEONTOLOGIA
Editorial:
SOC BRASILEIRA PALEONTOLOGIA
Referencias:
Año: 2007 vol. 10 p. 169 - 180
ISSN:
1519-7530
Resumen:
Temnospondyls are the most abundant constituent of the Colonia Orozco Local Fauna of the Uruguayan
Buena Vista Formation (Paraná Basin), contrasting with that observed at most latest Permian and earliest Triassic
assemblages elsewhere. The components of the Colonia Orozco fauna, appear to represent early stages of the turnover
evidenced in the communities of continental tetrapods at the Permo-Triassic boundary. They include plesiomorphic
representatives of groups present in Early Triassic assemblages as well as relicts of Late Permian taxa. In particular, the
presence of a close relative of the Russian dvinosauroid, Dvinosaurus, implies a dispersal event of this taxon to
Gondwana probably during the Late Permian. Comparisons of the Colonia Orozco fauna to other Permo-Triassic
communities indicate that it could be older than the Brazilian Lower Triassic Catuçaba Local Fauna of the Sanga do
Cabral Formation (Paraná Basin) and probably equivalent to the latest Permian Russian Vyazniki Community. Moreover,
the Colonia Orozco fauna could be close to the assemblages represented in the lowermost portion of the South African
Lower Triassic Lystrosaurus Assemblage Zone and probably to the Arcadia Formation of Australia.
Gondwana probably during the Late Permian. Comparisons of the Colonia Orozco fauna to other Permo-Triassic
communities indicate that it could be older than the Brazilian Lower Triassic Catuçaba Local Fauna of the Sanga do
Cabral Formation (Paraná Basin) and probably equivalent to the latest Permian Russian Vyazniki Community. Moreover,
the Colonia Orozco fauna could be close to the assemblages represented in the lowermost portion of the South African
Lower Triassic Lystrosaurus Assemblage Zone and probably to the Arcadia Formation of Australia.
Dvinosaurus, implies a dispersal event of this taxon to
Gondwana probably during the Late Permian. Comparisons of the Colonia Orozco fauna to other Permo-Triassic
communities indicate that it could be older than the Brazilian Lower Triassic Catuçaba Local Fauna of the Sanga do
Cabral Formation (Paraná Basin) and probably equivalent to the latest Permian Russian Vyazniki Community. Moreover,
the Colonia Orozco fauna could be close to the assemblages represented in the lowermost portion of the South African
Lower Triassic Lystrosaurus Assemblage Zone and probably to the Arcadia Formation of Australia.Lystrosaurus Assemblage Zone and probably to the Arcadia Formation of Australia.