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: Sinemurian age, Toarcian age, Hettangian age, Pliensbachian age
• Mesozoic Subages: Late Hettangian subage, Late Toarcian subage, Early Toarcian subage, Late Sinemurian subage, Early Pliensbachian subage, Middle Toarcian subage, Early Sinemurian subage, Late Pliensbachian subage, Early Hettangian subage, Middle Hettangian subage
• Ammonite Chrons of Northwest Europe: Spinatum chron, Ibex chron, Angulata chron, Liasicus chron, Margaritatus chron, Planorbis chron, Bucklandi chron, Jamesoni chron, Davoei chron, Levesquei chron, Serpentinum chron, Semicostatum chron, Tenuicostatum chron, Bifrons chron, Falciferum chron, Raricostatum chron, Variabilis chron, Thouarsense chron, Turneri chron, Oxynotum chron, Obtusum chron
• Ammonite Chrons of North America: Hillebrandti chron, Plesechioceras harbledownense chron, Crassicosta chron, Kanense chron, Planulata chron, Arnioceras arnouldi chron, Asteroceras varians chron, Coroniceras chron, Canadensis chron, Carlottense chron, Tetraspidoceras chron, Freboldi chron, Franziceras chron, Yakounensis chron, Whiteavesi chron, Euphyllites chron, Psiloceras chron, Pseudaetomoceras chron, Imlayi chron, Kunae chron
• Permian-Jurassic of New Zealand: Temaikan age, Herangi epoch, Kawhia epoch, Aratauran age, Ururoan age

This interval is used in the definition of 522 collections

A total of 14088 collections with 69681 occurrences lie within this time span