| Ozan Formation | |
|---|---|
| Stratigraphic range: Cretaceous | |
| Fossil ammonites from the Ozan Formation | |
| Type | Formation |
| Sub-units | Austin Group |
| Underlies | Annona Chalk |
| Overlies | Austin Chalk, Brownstown Marl |
| Thickness | 150 to 250 feet [1] |
| Location | |
| Region | Arkansas, Oklahoma |
| Country | United States |
| Type section | |
| Named by | C.H. Dane [2] |
The Ozan Formation is a geologic formation in Arkansas, Oklahoma [1] and Texas. It preserves fossils dating back to the Cretaceous period.