ammonites

Early/Lower Sinemurian subage/stage

General information
Lower boundary: equal to 196.5 Ma (based on Sinemurian)
Upper boundary: before 189.6 Ma (based on Sinemurian)
Continent: global
See collections within this interval
See map of collections within this interval
Key correlations
Period: Jurassic
Epoch: Early/Lower Jurassic
Stage: Sinemurian
10 million year bin: Jurassic 1
Contained within
  • Sinemurian
  • Early/Lower Jurassic
  • Herangi
  • Jurassic
  • Mesozoic
  • Sherman
  • Phanerozoic
    • Previous intervals
  • Hettangian
  • Pseudaetomoceras
  • Psiloceras
  • Angulata
  • Liasicus
  • Planorbis
  • Late/Upper Hettangian
  • Middle Hettangian
  • Early/Lower Hettangian
    • Next intervals
  • Pliensbachian
  • Late/Upper Pliensbachian
  • Early/Lower Pliensbachian
  • Whiteavesi
  • Imlayi
  • Spinatum
  • Margaritatus
  • Davoei
  • Ibex
  • Jamesoni
  • Ururoan
    • Shares base with
  • Asteroceras varians, Coroniceras, Plesechioceras harbledownense
    • Shares top with
  • Aratauran
    • Overlaps with
  • Tetraspidoceras (190.7 to 186.7 Ma)
  • Late/Upper Sinemurian (196.5 to 189.6 Ma)
  • Arnioceras arnouldi (196.5 to 189.6 Ma)
  • Raricostatum (196.5 to 189.6 Ma)
  • Oxynotum (196.5 to 189.6 Ma)
  • Obtusum (196.5 to 189.6 Ma)
  • Turneri (196.5 to 189.6 Ma)
  • Semicostatum (196.5 to 189.6 Ma)
  • Bucklandi (196.5 to 189.6 Ma)
  • Canadensis (196.6 to 190.7 Ma)
    • Appears in scales
  • Palfy Sinemurian - Toarcian Substages (2000)
  • Gradstein et al. 1995 Mesozoic Substages (1995)

    • Interval name: