Callovian ICS Stage
(Dreussian)
From 164.7 +/- 4 To 161.2 +/- 4 Ma
Start Defined By: Ammonite, lowest occurrence of the genus Kepplerites
(Kosmoceratidae). (Defines base of Macrocephalites herveyi Zone in
sub-Boreal province of Great Britain to southwest Germany.)
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_
-- A Substage of --
Eon: Phanerozoic (542 - -5.5012e-005)
Era: Mesozoic (251 - 65.5)
Period: Jurassic (199.6 - 145.5)
Epoch: Middle Jurassic (175.6 - 161.2)
Chinese Stage: Shaximioan (167 - 161.2)
New Zealand Stage: Temaikan (169 - 161.2)
-- Preceeded By --
ICS Stage: Bathonian (167.7 - 164.7)
-- Followed By --
Epoch: Late Jurassic (161.2 - 145.5)
ICS Stage: Oxfordian (161.2 - 155.7)
Chinese Stage: Suiningian (161.2 - 149)
|
