Río Neuquén Subgroup
Appearance
Río Neuquén Subgroup | ||
---|---|---|
Ma | ||
Type | Approximate paleocoordinates 42°12′S 49°24′W / 42.2°S 49.4°W | |
Region | Mendoza, Río Negro & Neuquén Provinces | |
Country | ![]() | |
Extent | Neuquén Basin | |
Type section | ||
Named for | Neuquén River | |
The Río Neuquén Subgroup is a geological
subgroup in the Neuquén Basin, Neuquén Province, Argentina, whose strata date back to the Late Cretaceous. The subgroup, formerly defined as a formation, is the middle unit of the Neuquén Group and contains the Plottier, Sierra Barrosa Formation,[1] Los Bastos Formation,[2] and Portezuelo Formations.[3][4][5] The subgroup overlies the Río Limay Subgroup and is overlain by the Río Colorado Subgroup.[6] Dinosaur remains are among the fossils that have been recovered from the formation.[7]
Fossil content
Dinosaurs | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Antarctosaurus[8] | A. giganteus[8] | "[Two] femora, pubis."[9] | Río Neuquén remains previously referred to A. giganteus are now attributed to an indeterminate sauropod.[8] | |||
A. wichmannianus[8] | ||||||
Megaraptor[8] | M. namunhuaiquii[8] | "Partial forelimb, manus, and pes."[10] | ||||
Patagonykus[8] | P. puertai[8] | "Partial postcranial skeleton."[11] | ||||
Rinconsaurus[8] | R. cadamirus[8] | ![]() | ||||
Titanosaurus[8] | Indeterminate[8] | Titanosaurus is now considered a nomen dubium.[citation needed] | ||||
Unenlagia[8] | U. comahuensis[8] | "Fragmentary postcrania."[12] | ![]() |
See also
- List of dinosaur-bearing rock formations
References
- ^ Garrido, 2011, p.237
- ^ Garrido, 2011, p.236
- ^ Balgord & Carapa, 2014, p.6
- ^ Balgord, 2017, p.455
- ^ Lebinson et al., 2018, p.252
- ^ Leanza et al., 2004, p.63
- ^ Weishampel, 2004, pp. 600-604
- ^ a b c d e f g h i j k l m n "Río Neuquén Formation." Weishampel, et al. (2004). Pg. 603.
- ^ "Table 13.1," in Weishampel, et al. (2004). Page 270.
- ^ "Table 10.1," in Weishampel, et al. (2004). Page 199.
- ^ "Table 11.1," in Weishampel, et al. (2004). Page 211.
- ^ "Table 10.1," in Weishampel, et al. (2004). Page 198.
Bibliography
- Balgord, Elizabeth A. 2017. Triassic to Neogene evolution of the south-central Andean arc determined by detrital zircon U-Pb and Hf analysis of Neuquén Basin strata, central Argentina (34°S–40°S). Lithosphere9. 453–462. .
- Balgord, Elizabeth A., and Barbara Carapa. 2014. Basin evolution of Upper Cretaceous–Lower Cenozoic strata in the Malargüe fold-and-thrust belt: northern Neuquen Basin, Argentina. Basin Research _. 1–24. Accessed 2019-02-22.
- Garrido, Alberto C. 2011. El Grupo Neuquén (Cretácico Tardío) en la Cuenca Neuquina, 231–244. XVIII Congreso Geológico Argentino. Accessed 2019-02-23.
- Leanza, H.A.; S. Apesteguia; F.E. Novas, and M.S. De la Fuente. 2004. Cretaceous terrestrial beds from the Neuquén Basin (Argentina) and their tetrapod assemblages. Cretaceous Research 25. 61-87. Accessed 2019-02-16.
- Lebinson, Fernando; Martín Turienzo; Natalia Sánchez; Vanesa Araujo; María Celeste D'Annunzio, and Luis Dimieri. 2018. The structure of the northern Agrio fold and thrust belt (37°30' S), Neuquén Basin, Argentina. Andean Geology 45. 249–273. Accessed 2019-02-22.
- Weishampel, David B.; Peter Dodson, and Halszka (eds.) Osmólska. 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21.ISBN 0-520-24209-2