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,Garrido, 2011, p.237 Los Bastos Formation,Garrido, 2011, p.236 and Portezuelo Formations.Balgord & Carapa, 2014, p.6Balgord, 2017, p.455Lebinson et al., 2018, p.252 The subgroup overlies the Río Limay Subgroup and is overlain by the Río Colorado Subgroup.Leanza et al., 2004, p.63 Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel, 2004, pp. 600-604
Fossil content
Dinosaurs Genus Species Location Stratigraphic position Material Notes Images Antarctosaurus"Río Neuquén Formation." Weishampel, et al. (2004). Pg. 603. A. giganteus "[Two] femora, pubis.""Table 13.1," in Weishampel, et al. (2004). Page 270. Río Neuquén remains previously referred to A. giganteus are now attributed to an indeterminate sauropod. A. wichmannianus Megaraptor M. namunhuaiquii "Partial forelimb, manus, and pes.""Table 10.1," in Weishampel, et al. (2004). Page 199. Patagonykus P. puertai "Partial postcranial skeleton.""Table 11.1," in Weishampel, et al. (2004). Page 211. Rinconsaurus R. cadamirus Titanosaurus Indeterminate Titanosaurus is now considered a nomen dubium. Unenlagia U. comahuensis "Fragmentary postcrania.""Table 10.1," in Weishampel, et al. (2004). Page 198.
See also List of dinosaur-bearing rock formations
References
Bibliography