| Asencio Formation | |
|---|---|
| Stratigraphic range: Campanian-Maastrichtian ~ | |
| Type | Geological formation |
| Sub-units | Del Palacio Member |
| Underlies | Queguay & Fray Bentos Formations |
| Overlies | Mercedes Formation |
| Lithology | |
| Primary | Sandstone |
| Location | |
| Coordinates | 33°00′S 57°12′W / 33.0°S 57.2°W / -33.0; -57.2 |
| Approximate paleocoordinates | 36°36′S 41°36′W / 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 |
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
Fossil eggs
Trace fossils
See also
- List of dinosaur-bearing rock formations
- List of fossiliferous stratigraphic units in Uruguay
- Adamantina Formation
- Allen Formation
- Marília Formation
References
- ^ Weishampel et al., 2004, pp. 600-604
- ^ Neuquensaurus australis at Fossilworks.org
- ^ Laplatasaurus araukanicus at Fossilworks.org
- ^ 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.
- ^ a b 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)
- ^ 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.
- ^ 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.
- ^ "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
- 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
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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
