Villalba de la Sierra Formation
| Villalba de la Sierra Formation | |
|---|---|
| Stratigraphic range: Campanian-Maastrichtian ~ | |
Excavation of a titanosaur at Lo Hueco | |
| Type | Geological formation |
| Lithology | |
| Primary | Mudstone |
| Other | Sandstone, gypsum |
| Location | |
| Coordinates | 40°00′N 2°00′W / 40.0°N 2.0°W |
| Approximate paleocoordinates | 30°42′N 0°36′W / 30.7°N 0.6°W |
| Region | Castilla-La Mancha |
| Country | Spain |
| Extent | Iberian Ranges |
| Type section | |
| Named for | Villalba de la Sierra |
The Villalba de la Sierra Formation is a Campanian to Maastrichtian geologic formation in Spain. Fossil dinosaur eggs have been reported from the formation, that comprises gypsiferous, grey, argillaceous mudstones and sandstones, deposited in a floodplain environment characterised by high seasonality and variability in water availability.