Chadian Regional Stage
From 345.3 +/- 2.1 To 341 Ma
Start Defined By: Foraminifer, lineage Eoparastaffella simplex morphotype 1/
morphotype 2.
Start Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
-- Overlaps With --
Chinese Stage: Yanguan (349.5 - 345)
Chinese Stage: Datangian (345 - 333)
-- 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: Middle Mississippian (345.3 - 326.4)
ICS Stage: Visean (345.3 - 326.4)
European Epoch: Dinantian (359.2 - 326.4)
North American Stage: Osagean (348 - 340)
-- Preceeded By --
Sub-Epoch: Early Mississippian (359.2 - 345.3)
ICS Stage: Tournaisian (359.2 - 345.3)
Regional Stage: Ivorean (348 - 345.3)
-- Followed By --
Regional Stage: Arundian (341 - 339)
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