| Montoya Group | |
|---|---|
| Stratigraphic range: | |
 Montoya Group beds form the shelf immediately below the peak of Timber Mountain, New Mexico, USA | |
| Type | Group |
| Sub-units | Cable Canyon Sandstone, Upham Dolomite, Aleman Formation, Cutter Formation |
| Underlies | Fusselman Formation, Percha Formation |
| Overlies | El Paso Formation |
| Thickness | 180 meters (590 ft) |
| Lithology | |
| Primary | Dolomite |
| Other | Limestone, sandstone |
| Location | |
| Coordinates | 32°51′07″N 105°51′55″W / 32.8519°N 105.8652°W |
| Region | Texas |
| Country | United States |
| Type section | |
| Named by | G.B. Richardson |
| Year defined | 1908 |
  Montoya Group (the United States)  Montoya Group (New Mexico) | |
The Montoya Group is a group of geologic formations in westernmost Texas and southern New Mexico. It preserves fossils dating back to the late Ordovician period.[1][2]