Río Neuquén Subgroup

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]

Río Neuquén Subgroup
Stratigraphic range: Late Turonian-Late Coniacian
~
TypeSubgroup
Unit ofNeuquén Group
Sub-unitsPlottier, Sierra Barrosa, Los Bastos & Portezuelo Formations
UnderliesRío Colorado Subgroup
OverliesRío Limay Subgroup
ThicknessUp to 155 m (509 ft)
Lithology
PrimarySandstone
OtherClaystone, limestone, mudstone
Location
Coordinates37.4°S 69.1°W / -37.4; -69.1
Approximate paleocoordinates42.2°S 49.4°W / -42.2; -49.4
RegionMendoza, Río Negro & Neuquén Provinces
Country Argentina
ExtentNeuquén Basin
Type section
Named forNeuquén River
Río Neuquén Subgroup is located in Argentina
Río Neuquén Subgroup
Río Neuquén Subgroup (Argentina)

Fossil content
See also: Plottier Formation § Fossil content, and Portezuelo Formation § 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.
Unenlagia[8] U. comahuensis[8] "Fragmentary postcrania."[12]

See also

References
  1. Garrido, 2011, p.237
  2. Garrido, 2011, p.236
  3. Balgord & Carapa, 2014, p.6
  4. Balgord, 2017, p.455
  5. Lebinson et al., 2018, p.252
  6. Leanza et al., 2004, p.63
  7. Weishampel, 2004, pp. 600-604
  8. "Río Neuquén Formation." Weishampel, et al. (2004). Pg. 603.
  9. "Table 13.1," in Weishampel, et al. (2004). Page 270.
  10. "Table 10.1," in Weishampel, et al. (2004). Page 199.
  11. "Table 11.1," in Weishampel, et al. (2004). Page 211.
  12. "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). Lithosphere 9. 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
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.