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A new fossiliferous assemblage is characterized for the Santa Maria Formation (Paraná basin). The... more A new fossiliferous assemblage is characterized for the Santa Maria Formation (Paraná basin). The fossil content is represented by: small to medium dicynodonts, constituted by
cranial material and isolated remains of specimens in different ontogenetic stages; cranial and post-cranial material of carnivore and gomphodont cynodonts; isolated fragments of axial and apendicular remains of indet. procolophonoids; as well as two skulls of the procolophonoid Candelaria barbouri. Several ichnologic materials are also recorded, represented by coprolites of herbivorous and carnivorous forms. The fossiliferous record allows to recognize the Therapsid Cenozone far west from the city of Candelária.
Proceedings of the Royal Society B: Biological Sciences, 2004
This study reports the earliest known evidence of osteophagy by invertebrates in a continental se... more This study reports the earliest known evidence of osteophagy by invertebrates in a continental setting from the Middle and Upper Triassic Santa Maria Supersequence, Paraná Basin, Brazil. Samples from the Dinodontosaurus Assemblage Zone (Pinheiros-Chiniquá Sequence – Middle Triassic) and the Hyperodapedon Assemblage Zone (Candelária Sequence – Upper Triassic) were analyzed and a number of trace morphologies were found, including tubes, holes and channels. We report the occurrence of Cubiculum inornatus from the Middle Triassic and Osteocallis mandibulus from the Upper Triassic and diagnose a new ichnospecies O. infestans isp. nov. The occurrence of these trace morphologies suggests that insect bone-modification behavior originated in Triassic Gondwanic environments, and dispersed during the Mesozoic, achieving a more cosmopolitan distribution during the Cretaceous.
A new fossiliferous assemblage is characterized for the Santa Maria Formation (Paraná basin). The... more A new fossiliferous assemblage is characterized for the Santa Maria Formation (Paraná basin). The fossil content is represented by: small to medium dicynodonts, constituted by
cranial material and isolated remains of specimens in different ontogenetic stages; cranial and post-cranial material of carnivore and gomphodont cynodonts; isolated fragments of axial and apendicular remains of indet. procolophonoids; as well as two skulls of the procolophonoid Candelaria barbouri. Several ichnologic materials are also recorded, represented by coprolites of herbivorous and carnivorous forms. The fossiliferous record allows to recognize the Therapsid Cenozone far west from the city of Candelária.
Proceedings of the Royal Society B: Biological Sciences, 2004
This study reports the earliest known evidence of osteophagy by invertebrates in a continental se... more This study reports the earliest known evidence of osteophagy by invertebrates in a continental setting from the Middle and Upper Triassic Santa Maria Supersequence, Paraná Basin, Brazil. Samples from the Dinodontosaurus Assemblage Zone (Pinheiros-Chiniquá Sequence – Middle Triassic) and the Hyperodapedon Assemblage Zone (Candelária Sequence – Upper Triassic) were analyzed and a number of trace morphologies were found, including tubes, holes and channels. We report the occurrence of Cubiculum inornatus from the Middle Triassic and Osteocallis mandibulus from the Upper Triassic and diagnose a new ichnospecies O. infestans isp. nov. The occurrence of these trace morphologies suggests that insect bone-modification behavior originated in Triassic Gondwanic environments, and dispersed during the Mesozoic, achieving a more cosmopolitan distribution during the Cretaceous.