201.4 - 174.7 Ma
The definition of this interval in the timescale International Chronostratigraphic Timescale is taken from the following source:
- K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. view
There are intervals in 5 timescales which overlap this one. show
- International Chronostratigraphic Timescale: Pliensbachian age, Sinemurian age, Toarcian age, Hettangian age
- Mesozoic Subages: Early Hettangian subage, Early Sinemurian subage, Late Hettangian subage, Middle Toarcian subage, Late Pliensbachian subage, Late Toarcian subage, Late Sinemurian subage, Middle Hettangian subage, Early Pliensbachian subage, Early Toarcian subage
- Ammonite Chrons of Northwest Europe: Margaritatus chron, Ibex chron, Thouarsense chron, Variabilis chron, Bucklandi chron, Semicostatum chron, Turneri chron, Obtusum chron, Liasicus chron, Serpentinum chron, Jamesoni chron, Tenuicostatum chron, Davoei chron, Spinatum chron, Levesquei chron, Falciferum chron, Bifrons chron, Planorbis chron, Oxynotum chron, Raricostatum chron, Angulata chron
- Ammonite Chrons of North America: Franziceras chron, Asteroceras varians chron, Crassicosta chron, Psiloceras chron, Plesechioceras harbledownense chron, Hillebrandti chron, Whiteavesi chron, Kunae chron, Carlottense chron, Euphyllites chron, Canadensis chron, Yakounensis chron, Tetraspidoceras chron, Kanense chron, Planulata chron, Arnioceras arnouldi chron, Coroniceras chron, Pseudaetomoceras chron, Freboldi chron, Imlayi chron
- Permian-Jurassic of New Zealand: Ururoan age, Aratauran age, Kawhia epoch, Herangi epoch, Temaikan age
This interval is used in the definition of 523 collections
A total of 14184 collections with 69927 occurrences lie within this time span