Asencio Formation

The Asencio Formation is a geological formation in the Paraná Basin of southwestern Uruguay whose strata date back to the Late Cretaceous (Campanian-Maastrichtian). Dinosaur remains are among the fossils that have been recovered from the formation.^[1]

Asencio Formation
Stratigraphic range: Campanian-Maastrichtian ~83.6–66.0 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Sub-units	Del Palacio Member
Underlies	Queguay & Fray Bentos Formations
Overlies	Mercedes Formation
Lithology
Primary	Sandstone
Location
Coordinates	33.0°S 57.2°W / -33.0; -57.2
Approximate paleocoordinates	36.6°S 41.6°W / -36.6; -41.6
Region	Colonia, Río Negro, Soriano, Tacuarembó
Country	Uruguay
Extent	Paraná Basin
Type section
Named for	Cry of Asencio
Asencio Formation (Uruguay)

Vertebrate paleofauna

• Neuquensaurus australis^[2]
• Laplatasaurus araukanicus^[3]
• Antarctosaurus wichmannianus^[4]

Fossil eggs

• Sphaerovum erbeni^[5]
• Tacuarembovum oblongum^[5]

See also

• List of dinosaur-bearing rock formations
• List of fossiliferous stratigraphic units in Uruguay
• Adamantina Formation
• Allen Formation
• Marília Formation