(Translated by https://www.hiragana.jp/)
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ammonites
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Middle Toarcian subage/stage

General information
Lower boundary: equal to 182 Ma (based on Planulata)
Upper boundary: before 175.6 Ma (based on Herangi)
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
  • Jurassic
  • Mesozoic
  • Phanerozoic
    • Previous intervals
  • Early/Lower Toarcian
  • Kanense
  • Falciferum
  • Tenuicostatum
    • Next intervals
  • Middle Jurassic
  • Aalenian
  • Howelli
  • Scissum
  • Westermanni
  • Concavum
  • Murchisonae
  • Opalinum
  • Late/Upper Aalenian
  • Middle Aalenian
  • Early/Lower Aalenian
  • Kawhia
  • Temaikan
    • Shares base with
  • Planulata
    • Shares top with
  • Crassicosta, Early/Lower Jurassic, Herangi, Hillebrandti, Late/Upper Toarcian, Thouarsense, Toarcian, Ururoan, Yakounensis
    • Overlaps with
  • Levesquei (182.0 to 175.6 Ma)
  • Variabilis (182.0 to 175.6 Ma)
  • Bifrons (182.0 to 175.6 Ma)
    • Appears in scales
  • Palfy Sinemurian - Toarcian Substages (2000)
  • Gradstein et al. 1995 Mesozoic Substages (1995)

    • Interval name: