| Montejunto Formation | |
| Type: | Geological formation |
| Age: | Oxfordian |
| Period: | Oxfordian |
| Prilithology: | Limestone |
| Otherlithology: | Mudstone |
| Coordinates: | 39.5°N -9.2°W |
| Paleocoordinates: | 33.7°N 1.6°W |
| Underlies: | Alcobaça Formation |
| Extent: | Lusitanian Basin |
The Montejunto Formation is an Oxfordian geologic formation in Portugal. Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.[1]