| Nocona Formation | |
|---|---|
| Stratigraphic range: Early Permian, Wolfcampian (Sakmarian?–Artinskian?) | |
| Type | Formation |
| Unit of | Wichita Group |
| Underlies | Petrolia Formation |
| Overlies | Archer City Formation |
| Thickness | 350 ft. |
| Lithology | |
| Primary | mudstone |
| Other | sandstone, siltstone |
| Location | |
| Region |  Texas |
| Country |  United States |
| Type section | |
| Named by | Hentz & Brown, 1987 |
The Nocona Formation is a geological formation in Texas, dating back to the Wolfcampian series (Early Permian). As part of the Texas red beds, it is one of several formations renowned for dense bonebeds of terrestrial vertebrate fossils.[1][2][3]
- ^ Romer, A. S.; Price, L. W. (1940), "Review of the Pelycosauria", 28 : Review of the Pelycosauria, Geological Society of America Special Papers, vol. 28, Geological Society of America, pp. 1–534, doi:10.1130/spe28-p1
- ^ Sander, P. Martin (1987). "Taphonomy of the Lower Permian Geraldine Bonebed in Archer County, Texas". Palaeogeography, Palaeoclimatology, Palaeoecology. 61: 221–236. doi:10.1016/0031-0182(87)90051-4.
- ^ Martin Sander, P. (1989). "Early Permian depositional environments and pond bonebeds in central Archer County, Texas". Palaeogeography, Palaeoclimatology, Palaeoecology. 69: 1–21. doi:10.1016/0031-0182(89)90153-3. ISSN 0031-0182.