Permian of North America
The interval definitions in this timescale are derived from the following sources:
- F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
- A. G. Sennikov and V. K. Golubev. 2006. Vyazniki Biotic Assemblage of the Terminal Permian. Paleontological Journal 40(suppl. 4):S475-S481 view
There are 13 timescales which overlap this one. show
Interval boundaries marked with * have been interpolated based on the differences between the ages for international timescale boundaries quoted in the source and the currently accepted ages for those boundaries.
This timescale is used in the definition of 189 collections
| International Chronostratigraphic Timescale | Permian of North America | Permo-Triassic Subages of Eastern Europe | ||||
|---|---|---|---|---|---|---|
| Triassic | Early Triassic | Olenekian | Vokhmian | 247.2 | ||
| Induan | 251.2 | |||||
| Permian | Lopingian | Changhsingian | 251.902 | |||
| Wuchiapingian | Late Vyatkian/Early Vyatkian | 254.14 | ||||
| Guadalupian | Capitanian | Capitanian | Late Severodvinian/Early Severodvinian | 259.51 | ||
| Wordian | Wordian | Late Urzhumian/Early Urzhumian | 264.28 | |||
| Roadian | Roadian | Late Kazanian/Early Kazanian | 266.9 | |||
| Cisuralian | Kungurian | Leonardian | Cathedralian | 273.01 | ||
| Hessian | 281.9 * | |||||
| Artinskian | 283.5 | |||||
| Wolfcampian | Lenoxian | 286.1 * | ||||
| Sakmarian | 290.1 | |||||
| Asselian | Nealian | 293.52 | ||||
| 298.9 | ||||||