Atokan/Derryan North American Stage
(Atokan, Derryan)
From 311.7 +/- 1.1 To 308 Ma
Start Defined By: Near lowest occurrences of Declinognathodus donetzianus
and/or Idiognathoides postsulcatus conodont species, and fusulinid species
Aljutovella aljutovica.
Start Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
-- Overlaps With --
Chinese Stage: Dalanian (313 - 310)
Chinese Stage: Mapingian (310 - 299)
-- A Substage of --
Eon: Phanerozoic (542 - -5.5012e-005)
Era: Paleozoic (542 - 251)
Period: Carboniferous (359.2 - 299)
Epoch: Pennsylvanian (318.1 - 299)
Sub-Epoch: Middle Pennsylvanian (311.7 - 306.5)
ICS Stage: Moscovian (311.7 - 306.5)
European Epoch: Silesian (326.4 - 299)
European Stage: Westphalian (315 - 306.5)
-- Preceeded By --
Sub-Epoch: Early Pennsylvanian (318.1 - 311.7)
ICS Stage: Bashkirian (318.1 - 311.7)
Russian Stage: Melekesskian (313.4 - 311.7)
-- Followed By --
North American Stage: Desmoinian (308 - 306.5)
Russian Stage: Podolskian (308 - 307.2)
-- Contains the Following Stages --
Russian Stage: Vereiskian (311.7 - 309.2)
Russian Stage: Kashirskian (309.2 - 308)
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