192.9 - 184.2 Ma

The definition of this interval in the timescale Ammonite Chrons of Northwest Europe is taken from the following source:

• J. Palfy, P. L. Smith, and J. K. Mortensen. 2000. A U-Pb and 40Ar/39Ar time scale for the Jurassic. Canadian Journal of Earth Sciences 37(6):923-944 view

There are intervals in 5 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Early Jurassic epoch, Pliensbachian age
• Mesozoic Subages: Late Pliensbachian subage, Early Pliensbachian subage
• Ammonite Chrons of Northwest Europe: Jamesoni chron, Margaritatus chron, Ibex chron, Spinatum chron
• Ammonite Chrons of North America: Canadensis chron, Coroniceras chron, Asteroceras varians chron, Arnioceras arnouldi chron, Plesechioceras harbledownense chron, Kunae chron, Imlayi chron, Whiteavesi chron, Freboldi chron, Tetraspidoceras chron
• Permian-Jurassic of New Zealand: Herangi epoch, Ururoan age, Aratauran age

This interval is used in the definition of 413 collections

A total of 4941 collections with 23777 occurrences lie within this time span