Bathonian ICS Stage
From 167.7 +/- 3.5 To 164.7 +/- 4 Ma
Start Defined By: Ammonite, lowest occurrence of Parkinsonia (G.) convergens
(defines base of Zigzagiceras zigzag Zone).
End 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.)
Start Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
End Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
-- Overlaps With --
Chinese Stage: Xintiangouan (175.6 - 167)
Chinese Stage: Shaximioan (167 - 161.2)
-- 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)
New Zealand Stage: Temaikan (169 - 161.2)
-- Preceeded By --
ICS Stage: Bajocian (171.6 - 167.7)
-- Followed By --
ICS Stage: Callovian (164.7 - 161.2)
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