| Kandreho Formation | |
| Period: | Toarcian |
| Age: | Toarcian ~ |
| Type: | Geological formation |
| Prilithology: | Marly limestone |
| Namedfor: | Kandreho |
| Namedby: | Geiger |
| Year Ts: | 2004 |
| Coordinates: | -17.5°N 45.3°W |
| Paleocoordinates: | -22.3°N 24°W |
| Region: | Mahajanga Province |
| Country: |  Madagascar |
| Extent: | Mahajanga Basin |
The Kandreho Formation is an Early Jurassic (middle or late Toarcian) geological formation of the Mahajanga Basin of Madagascar. The marly limestones of the formation were deposited in a subtidal lagoonal environment. The formation overlies the Bouleiceras and Spiriferina beds of the early Toarcian and has been correlated to the Marrat Formation of Saudi Arabia.[1] Fossils of the marine crocodylian "Steneosaurus" as well as bivalves and the ammonite Nejdia have been found in the formation.[2] [3] The name Kandreho Formation was proposed by Geiger in 2004.[4]