Río Neuquén Subgroup | |
---|---|
Stratigraphic range:
Late Turonian-
Late Coniacian ~ | |
Type | Subgroup |
Unit of | Neuquén Group |
Sub-units | Plottier, Sierra Barrosa, Los Bastos & Portezuelo Formations |
Underlies | Río Colorado Subgroup |
Overlies | Río Limay Subgroup |
Thickness | Up to 155 m (509 ft) |
Lithology | |
Primary | Sandstone |
Other | Claystone, limestone, mudstone |
Location | |
Coordinates | 37°24′S 69°06′W / 37.4°S 69.1°W |
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]
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] | ![]() |
Río Neuquén Subgroup | |
---|---|
Stratigraphic range:
Late Turonian-
Late Coniacian ~ | |
Type | Subgroup |
Unit of | Neuquén Group |
Sub-units | Plottier, Sierra Barrosa, Los Bastos & Portezuelo Formations |
Underlies | Río Colorado Subgroup |
Overlies | Río Limay Subgroup |
Thickness | Up to 155 m (509 ft) |
Lithology | |
Primary | Sandstone |
Other | Claystone, limestone, mudstone |
Location | |
Coordinates | 37°24′S 69°06′W / 37.4°S 69.1°W |
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]
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] | ![]() |