Buena Vista Formation

Buena Vista Formation Stratigraphic range:
Type	Geological formation
Underlies	Tacuarembó Formation
Overlies
Lithology
Primary	Sandstone, mudstone
Other	Conglomerate
Location
Coordinates	32°18′S 54°06′W / 32.3°S 54.1°W / -32.3; -54.1Coordinates: 32°18′S 54°06′W / 32.3°S 54.1°W / -32.3; -54.1
Approximate paleocoordinates	40°12′S 15°42′W / 40.2°S 15.7°W / -40.2; -15.7
Region	Cerro Largo Department
Country	Uruguay
Extent	Norte Basin
Buena Vista Formation (Uruguay)

The Buena Vista Formation is a geologic formation of the Cerro Largo Department in northeastern Uruguay. The fluvial sandstones and mudstones preserve temnospondyl and archosaur fossils.

Description[]

The Buena Vista Formation is characterized by reddish fine sandstone interbedded with lenticular clay layers and intraformational conglomerates deposited in a fluvial environment.^[1]

Fossil content[]

The following fossils have been reported from the formation:^[2][1]

• Temnospondyls
  • Arachana nigra
  • Uruyiella liminea
  • Dvinosauria indet.
  • Mastodonsauridae indet.

• Reptiles
  • Pintosaurus magnidentis
  • Archosauromorpha indet.

See also[]

• List of fossiliferous stratigraphic units in Uruguay

References[]

Bibliography[]

• Pineiro, G.; M. Verde; M. Ubilla, and J. Ferigolo. 2003. First Basal Synapsids (“Pelycosaurs”) from the Upper Permian - ?Lower Triassic of Uruguay. Journal of Paleontology 77. 389-392. Accessed 2020-06-15.