Rio Bonito Formation
Glossopteris flora
The Glossopteris flora is characteristic of fossil sequences of the Gondwana supercontinent; it developed and became the dominant flora of the southern Permian to early Triassic, and became extinct at the end of that period. This flora is not only the main fossil content of the Rio Bonito Formation coals, the coal extracted as in Australia and South Africa's first work to record the occurrence of horizons megaflora associated with coal seams within a paleogeographic approach and palaeoclimatic in the Paraná Basin, was the study by White in 1908. This allowed a large correlation between Gondwana coal deposits in southern Brazil and those registered in South Africa, Australia, India and Antarctica, including showing that the latter has been in latitude near the south pole less than today, allowing the occurrence of an extensive flora.
Fossil content
Among others, the following fossil flora have been recovered from the formation: