Devonian Period
From 416 +/- 2.8 To 359.2 +/- 2.5 Ma
Start Defined By: Graptolite, lowest occurrence of Monograptus uniformis.
End Defined By: Conodont, above lowest occurrence of Siphonodella sulcata.
Start Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
End Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
-- A Substage of --
Eon: Phanerozoic (542 - -5.5012e-005)
Era: Paleozoic (542 - 251)
-- Preceeded By --
Period: Silurian (443.7 - 416)
Epoch: Late Silurian (422.9 - 416)
Sub-Epoch: Pridoli (418.7 - 416)
Australian Stage: Melbournian (428.2 - 416)
North American Stage: Cayugan (421.3 - 416)
-- Followed By --
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: Shaodongian (359.2 - 349.5)
European Epoch: Dinantian (359.2 - 326.4)
North American Stage: Kinderhookian (359.2 - 348)
Regional Stage: Hastarian (359.2 - 348)
-- Contains the Following Epochs --
Epoch: Early Devonian (416 - 397.5)
Epoch: Middle Devonian (397.5 - 385.3)
Epoch: Late Devonian (385.3 - 359.2)
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