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Mariana Pimentel is a municipality in the state of Rio Grande do Sul, Brazil. It is located approximately 75 km from the state's capital, Porto Alegre.
Gangamopteris is a genus of Carboniferous-Permian plants, very similar to Glossopteris. Previously, it was classified as fern with reproduction by seed. The genus is usually only applied to leaves, making it a form taxon. Gangamopteris dominates some coal deposits, such as those of the Beacon Supergroup.
Pecopteris is a very common form genus of leaves. Most Pecopteris leaves and fronds are associated with the marattialean tree fern Psaronius. However, Pecopteris-type foliage also is borne on several filicalean ferns, and at least one seed fern. Pecopteris first appeared in the Devonian period, but flourished in the Carboniferous, especially the Pennsylvanian. Plants bearing these leaves became extinct in the Permian period, due to swamps disappearing and temperatures on Earth dropping.
Pampaphoneus is an extinct genus of carnivorous dinocephalian therapsid belonging to the family Anteosauridae. It lived 268 to 265 million years ago during the Wordian age of the Guadalupian period in what is now Brazil. Pampaphoneus is known by an almost complete skull with the lower jaw still articulated, discovered on the lands of the Boqueirão Farm, near the city of São Gabriel, in the state of Rio Grande do Sul. A second specimen from the same locality was reported in 2019 and 2020 but has not yet been described. It is composed of a skull associated with postcranial remains. It is the first South American species of dinocephalian to have been described. The group was previously known in South America only by a few isolated teeth and a jaw fragment reported in 2000 in the same region of Brazil. Phylogenetic analysis conducted by Cisneros and colleagues reveals that Pampaphoneus is closely related to anteosaurs from European Russia, indicating a closer faunal relationship between South America and Eastern Europe than previously thought, thus promoting a Pangea B continental reconstruction.
Sphenopteris is a genus of seed ferns containing the foliage of various extinct plants, ranging from the Devonian to Late Cretaceous. One species, S. höninghausi, was transferred to the genus Crossotheca in 1911.
Brasilodendron was a genus of lycophytes dating from the Permian. Plants were vascularized with reproduction by spores.
The genus Phyllotheca was created in 1828, when Brongniart described the type species Phyllotheca australis coming from Hawkesbury River, Australia.
Samaropsis is a form genus named by Goeppert in 1864. Later Sewart (1917) redefined the taxon to refer only to the seeds.
Cordaicarpus is a form genus named by Geinitz (1862) and redefined by Seward (1917) to avoid confusion with another genus and to establish that the genus refers only seeds. Seward defined the differences between Cordaicarpus and Samaropsis.
Botrychiopsis is an extinct genus that existed from the Carboniferous to the Permian. Vascularized seedless plants (ferns) and reproduction by spores. They leaf type fronds. They lived in locals humid and swampy.
Cheirophyllum is an extinct plant genus that existed during the Permian.
Chiropteris is an extinct genus of plants that existed from the Early Permian to the Late Jurassic.
Stephanophyllites is an extinct genus of plants that lived in the Permian.
Kawizophyllum is an extinct genus of plants that lived in the Permian.
Cyclodendron was a genus of lycophytes dating from the Permian. Plants were vascularized with reproduction by spores.
Portalites is an extinct genus of acritarchs. The species Portalites gondwanensis was located in outcrop Morro do Papaléo in the town of Mariana Pimentel in Brazil, the geopark Paleorrota. The outcrop is in the Rio Bonito Formation and date from Sakmarian in the Permian.
Brazilea is an extinct genus of algae. The species Brazilea helby and Brazilea scissa were located in outcrop Morro do Papaléo in the town of Mariana Pimentel, the geopark Paleorrota. The outcrop dates to the Sakmarian of the Permian.
Leiosphaeridia is an extinct genus of algae or acritarchs. The genus of undefined species were found in outcrop Morro do Papaléo in the town of Mariana Pimentel in Brazil, the geopark Paleorrota. The outcrop date Sakmarian in Permian.
Tetraporina is an extinct genus of algae. The genus of undefined species were found in outcrop Morro do Papaléo in the town of Mariana Pimentel in Brazil, the geopark Paleorrota, on Rio Bonito Formation. The outcrop date Sakmarian in Permian.
Quadrisporites is an extinct genus of acritarchs. The species Q. horridus was located in outcrop Morro do Papaléo in the town of Mariana Pimentel in Brazil, the geopark Paleorrota. The outcrop is in the Rio Bonito Formation and date of Sakmarian in the Permian.
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