Ivorean Regional Stage
From 348 To 345.3 +/- 2.1 Ma
End Defined By: Foraminifer, lineage Eoparastaffella simplex morphotype 1/
morphotype 2.
End Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
-- A Substage of --
Eon: Phanerozoic (542 - -5.5012e-005)
Era: Paleozoic (542 - 251)
Period: Carboniferous (359.2 - 299)
Epoch: Mississippian (359.2 - 318.1)
Sub-Epoch: Early Mississippian (359.2 - 345.3)
ICS Stage: Tournaisian (359.2 - 345.3)
Chinese Stage: Yanguan (349.5 - 345)
European Epoch: Dinantian (359.2 - 326.4)
North American Stage: Osagean (348 - 340)
-- Preceeded By --
North American Stage: Kinderhookian (359.2 - 348)
Regional Stage: Hastarian (359.2 - 348)
-- Followed By --
Sub-Epoch: Middle Mississippian (345.3 - 326.4)
ICS Stage: Visean (345.3 - 326.4)
Regional Stage: Chadian (345.3 - 341)
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