Leonardian North American Stage
From 280 To 270.6 +/- 0.7 Ma
End Defined By: Conodont, lowest occurrence of Jinogondolella nanginkensis.
End Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
-- Overlaps With --
ICS Stage: Artinskian (284.4 - 275.6)
New Zealand Stage: Telfordian (289 - 278)
-- A Substage of --
Eon: Phanerozoic (542 - -5.5012e-005)
Era: Paleozoic (542 - 251)
Period: Permian (299 - 251)
Epoch: Early Permian (299 - 270.6)
-- Preceeded By --
North American Stage: Wolfcampian (299 - 280)
-- Followed By --
Epoch: Middle Permian (270.6 - 260.4)
ICS Stage: Roadian (270.6 - 268)
European Stage: Kazanian (270.6 - 260.4)
New Zealand Stage: Braxtonian (270.6 - 260.4)
Regional Stage: Thuringian (270.6 - 251)
-- Contains the Following Stages --
ICS Stage: Kungurian (275.6 - 270.6)
New Zealand Stage: Mangapirian (278 - 270.6)
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