Vilquechico Formation
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| Vilquechico Formation | |
|---|---|
| Stratigraphic range: Late Campanian-Late Maastrichtian ~ | |
| Type | Geological formation |
| Underlies | Auzangate Formation |
| Overlies | Ayabacas Formation |
| Lithology | |
| Primary | Sandstone |
| Other | Shale |
| Location | |
| Coordinates | 15°13′03″S 69°40′56″W / 15.21750°S 69.68222°W |
| Region | Puno Department |
| Country | Peru |
| Type section | |
| Named for | Vilquechico |
 Paleogeography of Northern South America, 65 Ma by Ron Blakey | |
The Vilquechico Formation is a Late Campanian to Late Maastrichtian geologic formation in southern Peru. Fossil ornithopod tracks have been reported from the formation.[1] The formation overlies the Ayabacas Formation and is overlain by the Auzangate Formation.[2]