| Watahomigi Formation | |
| Type: | Geologic formation |
| Age: | Carboniferous |
| Period: | Carboniferous |
| Namedfor: | Watahomigi Point |
| Namedby: | E.H. McKee |
| Unitof: | Supai Group |
| Underlies: | Manakacha Formation |
| Overlies: | Surprise Canyon Formation |
| Extent: | Grand Canyon |
| Year Ts: | 1975 |
The Watahomigi Formation is a geologic formation in the Grand Canyon region of Arizona. It preserves fossils dating back to the Carboniferous period.[1]