Middle Jurassic Epoch
(Dogger)
From 175.6 +/- 2 To 161.2 +/- 4 Ma
Start Defined By: Ammonite, lowest occurrence of Leioceras genus.
End Defined By: Ammonite, Brightia thuouxensis Horizon at base of the
Cardioceras scarburgense Subzone (Quenstedtoceras mariae Zone).
Start Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
End Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
-- Overlaps With --
New Zealand Stage: Uruoan (188 - 169)
-- A Substage of --
Eon: Phanerozoic (542 - -5.5012e-005)
Era: Mesozoic (251 - 65.5)
Period: Jurassic (199.6 - 145.5)
-- Preceeded By --
Epoch: Early Jurassic (199.6 - 175.6)
ICS Stage: Toarcian (183 - 175.6)
-- Followed By --
Epoch: Late Jurassic (161.2 - 145.5)
ICS Stage: Oxfordian (161.2 - 155.7)
Chinese Stage: Suiningian (161.2 - 149)
-- Contains the Following Stages --
ICS Stage: Aalenian (175.6 - 171.6)
ICS Stage: Bajocian (171.6 - 167.7)
ICS Stage: Bathonian (167.7 - 164.7)
ICS Stage: Callovian (164.7 - 161.2)
Chinese Stage: Xintiangouan (175.6 - 167)
Chinese Stage: Shaximioan (167 - 161.2)
New Zealand Stage: Temaikan (169 - 161.2)
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