Marattiaceous fern- Tuvichapteris-
Paraná Basin, Paraguay.
Permian Period.
17″ x 6″
The Parana Basin is the largest intracratonic basin of South America, mainly developed in Brazil and the eastern region of Paraguay. It extends southward to northern Uruguay and toward the west into Argentina where is known as the Chaco-Parana Basin. The basin covers an area of about 1.600.000 km2, and its fill consists of up to 5000 m-thick Upper Ordovician to Cretaceous sedimentary and volcanic rocks. Fossil plants from the Permian of the Paraná Basin in Paraguay are poorly known in contrast to the more or less abundant records from Brazil and Uruguay.