Early Jurassic Epoch
(Lower Jurassic, Lias, Ziliujingian)
From 199.6 +/- 0.6 To 175.6 +/- 2 Ma
Start Defined By: Near lowest occurrence of smooth Psiloceras planorbis
ammonite group.
End Defined By: Ammonite, lowest occurrence of Leioceras genus.
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 --
Period: Triassic (251 - 199.6)
Epoch: Late Triassic (228 - 199.6)
ICS Stage: Rhaetian (203.6 - 199.6)
Chinese Stage: Erqiaoan (209 - 199.6)
New Zealand Stage: Otapirian (203 - 199.6)
-- Followed By --
Epoch: Middle Jurassic (175.6 - 161.2)
ICS Stage: Aalenian (175.6 - 171.6)
Chinese Stage: Xintiangouan (175.6 - 167)
-- Contains the Following Stages --
ICS Stage: Hettangian (199.6 - 196.5)
ICS Stage: Sinemurian (196.5 - 189.6)
ICS Stage: Pliensbachian (189.6 - 183)
ICS Stage: Toarcian (183 - 175.6)
New Zealand Stage: Aratauran (199.6 - 188)
Regional Stage: Lotharingian (193.3 - 189.6)
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