| Baiying Bologai Formation | |
| Type: | Geological formation |
| Age: | Early Cretaceous ~ |
| Period: | Early Cretaceous |
| Prilithology: | Conglomerate |
| Region: | Ömnögovi Province |
| Country: |  Mongolia |
| Coordinates: | 43.3°N 110°W |
| Paleocoordinates: | 45.2°N 110.9°W |
The Baiying Bologai Formation, in other literature named Bayan Bologai Formation, is an Early Cretaceous geologic formation in the Ömnögovi Province of Mongolia.[1] Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.[2]
The following fossils have been reported from the formation:[1]