Asencio Formation

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)

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]

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

References

1. Weishampel et al., 2004, pp. 600-604
2. Neuquensaurus australis at Fossilworks.org
3. Laplatasaurus araukanicus at Fossilworks.org
4. Antarctosaurus wichmannianus at Fossilworks.org
5. Mones, A. (1980) "Nuevos elementos de la paleoherpetofauna del Uruguay (Crocodilia y Dinosauria)." Actas II Congreso Argentino de Paleontologia y Bioestratigrafia y I Congreso Latinoamericano, Buenos Aires 1:265-277 (in Spanish)

Bibliography

• Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21

Further reading

• F. v. Huene. 1929. Terrestrische Oberkreide in Uruguay [The terrestrial Upper Cretaceous in Uruguay]. Centralblatt für Mineralogie, Geologie und Paläontologie Abteilung B 1929:107-112