| Rayoso Formation | |
|---|---|
| Stratigraphic range: Aptian-Albian, ~ | |
| Type | Geological formation |
| Unit of | Huitrín-Rayoso Group |
| Sub-units | Pichi Neuquén Member |
| Underlies | Lohan Cura & Carrín Cura Formations |
| Overlies | La Amarga & Huitrín Formations |
| Thickness | up to 604 m (1,982 ft) |
| Lithology | |
| Primary | Sandstone |
| Location | |
| Coordinates | 38°24′S 69°54′W / 38.4°S 69.9°W |
| Approximate paleocoordinates | 40°06′S 37°30′W / 40.1°S 37.5°W |
| Region | Neuquén Province |
| Country |  Argentina |
| Extent | Neuquén Basin |
  Rayoso Formation (Argentina) | |
The Rayoso Formation is a geological formation in the Neuquén Province of Argentina whose strata date back to the Aptian-Albian stages of the Early Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.[1]
- ^ Weishampel et al., 2004, "Dinosaur distribution (Early Cretaceous, South America).", pp.570-571