''Gangamopteris'' is a genus of Carboniferous-Permian plants, very similar to ''

Glossopteris ''Glossopteris'' tymology: from Ancient Greek γλῶσσα (glôssa, " tongue ") + πτερίς (pterís, " fern ")is the largest and best-known genus of the extinct Permian order of seed ferns known as Glossopteridales (also known as Arberia ...

''. Previously, it was classified as

fern A fern (Polypodiopsida or Polypodiophyta ) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. The polypodiophytes include all living pteridophytes exce ...

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 The Beacon Supergroup is a geological formation exposed in Antarctica and deposited from the Devonian to the Triassic (). The unit was originally described as either a formation or sandstone, and upgraded to group and supergroup as time passed. It ...

. In Paleorrota

geopark A geopark is a protected area with internationally significant geology within which sustainable development is sought and which includes tourism, conservation, education and research concerning not just geology but other relevant sciences. In 20 ...

Rio Grande do Sul Rio Grande do Sul (, , ; "Great River of the South") is a state in the southern region of Brazil. It is the fifth-most-populous state and the ninth largest by area. Located in the southernmost part of the country, Rio Grande do Sul is border ...

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

, were found ''Gangamopteris obovata''. Were located on the Mina ''Morro do Papaléo'' in Mariana Pimentel and ''Quitéria'' in

Pantano Grande Pantano Grande is a municipality in the state of Rio Grande do Sul, Brazil. See also *List of municipalities in Rio Grande do Sul This is a list of the municipalities in the state of Rio Grande do Sul (RS), located in the South Region of Brazi ...

. Dating from the

Permian The Permian ( ) is a geologic period and stratigraphic system which spans 47 million years from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.9 Mya. It is the last period of the Paleo ...

and were in the Rio Bonito Formation. In the town of

Cachoeira do Sul Cachoeira do Sul () is a municipality in the state of Rio Grande do Sul, southernmost Brazil. Its Marian Catedral da Nossa Senhora da Conceição http://www.gcatholic.org/churches/brazil/2666.htm GCatholic is the episcopal see of the Roman Catho ...

, met ''Gangamopteris sulriograndensis'' were discovered.NOVA ESPÉCIE DO GÊNERO GANGAMOPTERIS NO PERMIANO INFERIOR DA BACIA DO PARANÁ, RS, BRASIL
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References

Prehistoric plant genera Pteridospermatophyta Carboniferous plants Permian plants {{permian-plant-stub