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// Workers AI · dad joke modeWhat did the Asencio Formation say? "I'm a rock solid formation.

Asencio Formation
Stratigraphic range: Campanian-Maastrichtian
~83.6–66.0 Ma
TypeGeological formation
Sub-unitsDel Palacio Member
UnderliesQueguay & Fray Bentos Formations
OverliesMercedes Formation
Lithology
PrimarySandstone
Location
Coordinates33°00′S 57°12′W / 33.0°S 57.2°W / -33.0; -57.2
Approximate paleocoordinates36°36′S 41°36′W / 36.6°S 41.6°W / -36.6; -41.6
RegionColonia, Río Negro, Soriano, Tacuarembó
CountryUruguay
ExtentParaná Basin
Type section
Named forCry of Asencio
Asencio Formation is located in Uruguay
Asencio Formation
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

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Fossil eggs

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Trace fossils

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See also

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References

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  1. Weishampel et al., 2004, pp. 600-604
  2. Neuquensaurus australis at Fossilworks.org
  3. Laplatasaurus araukanicus at Fossilworks.org
  4. Mones, Álvaro (1972). "Lista de los vertebrados fósiles de Uruguay, I. Chondrichthyes, Osteichthyes, Reptilia, Aves" (PDF). Comunicaciones Paleontológicas del Museo de Historia Natural de Montevideo. I (3): 30. Retrieved 20 December 2025. Cite error: Unknown parameter ")" in <ref> tag; supported parameters are dir, follow, group, name (see the help page).
  5. 1 2 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)
  6. Novo Buess, Anaclara (2020). "Trabajo final de licenciatura en geología: "Mapa geológico de la región al sur de la ciudad de Mercedes y caracterización litológica de la formación Asencio"" (PDF). UdelaR, Facultad de Ciencias (in Spanish). Retrieved 14 December 2025.
  7. Verde, Mariano; Genise, Jorge F. (2014). "Elipsoideichnus meyeri Roselli 1987 revisited: A helicoidal fossil bee nest from the Paleogene of Uruguay". Spanish Journal of Palaeontology. 29 (1): 25–32. Retrieved 15 December 2025.
  8. "Corimbatichnus fernandezi: A cluster of fossil bee cells from the late cretaceous‐early tertiary of Uruguay". Ichnos. 7 (2): 115–125. doi:10.1080/10420940009380150. hdl:11336/70104. Retrieved 17 December 2025.

Bibliography

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Further reading

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  • 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