| Arauz Formation | |
| Type: | Geological formation |
| Age: | Emsian ~ |
| Period: | Emsian |
| Prilithology: | Marl |
| Otherlithology: | Shale, limestone |
| Namedfor: | Arauz River |
| Region: | Palencia |
| Country: |  Spain |
| Coordinates: | 43°N -0.9°W |
| Paleocoordinates: | -43°N 35.4°W |
| Unitof: | Abadia Group |
| Subunits: | Lezna & Requejada Members |
The Arauz Formation is an Emsian fossiliferous stratigraphic unit in Spain.[1] It is a member of the Abadia Group. It is situated in the Province of Palencia, North Spain. It is in the north of Natural Park of Fuentes Carrionas and Fuente Cobre-Montaña Palentina where the Rio Arauz lies. It is from the Devonian of Spain.[2]
The following fossils have been reported from the formation:[1]