Alportian Regional Stage
From 324.5 To 318.1 +/- 1.3 Ma
End Defined By: Conodont, lowest occurrence of Declinognathodus nodiliferus
s.l.
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: Late Mississippian (326.4 - 318.1)
ICS Stage: Serpukhovian (326.4 - 318.1)
Chinese Stage: Dewuan (333 - 318.1)
European Epoch: Silesian (326.4 - 299)
European Stage: Namurian (326.4 - 315)
North American Stage: Chesterian (333 - 318.1)
-- Preceeded By --
Regional Stage: Elvirian (326 - 324.5)
Regional Stage: Chokerian (325 - 324.5)
-- Followed By --
Epoch: Pennsylvanian (318.1 - 299)
Sub-Epoch: Early Pennsylvanian (318.1 - 311.7)
ICS Stage: Bashkirian (318.1 - 311.7)
Chinese Stage: Huashibanian (318.1 - 313)
Regional Stage: Kinderscoutian (318.1 - 317)
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