ammonites

Early/Lower Toarcian subage/stage

General information
Lower boundary: equal to 183 Ma (based on Toarcian)
Upper boundary: equal to 182 Ma (based on Kanense)
Continent: global
See collections within this interval
See map of collections within this interval
Key correlations
Period: Jurassic
Epoch: Early/Lower Jurassic
Stage: Toarcian
10 million year bin: Jurassic 3
Contained within
  • Ururoan
  • Early/Lower Jurassic
  • Herangi
  • Jurassic
  • Mesozoic
  • Sherman
  • Phanerozoic
    • Previous intervals
  • Pliensbachian
  • Late/Upper Pliensbachian
  • Early/Lower Pliensbachian
  • Carlottense
  • Spinatum
  • Margaritatus
  • Davoei
  • Ibex
  • Jamesoni
    • Next intervals
  • Middle Toarcian
  • Planulata
  • Levesquei
  • Variabilis
  • Bifrons
    • Equivalent to
  • Kanense
    • Contains
  • Falciferum, Tenuicostatum
    • Shares base with
  • Toarcian
    • Appears in scales
  • Palfy Sinemurian - Toarcian Substages (2000)
  • Gradstein et al. 1995 Mesozoic Substages (1995)

    • Interval name: