Tuvalian Regional Stage
From 225 To 216.5 +/- 2 Ma
End Defined By: Base of Klamathites macrolobatus or Stikinoceras kerri
ammonoid zones and the Metapolygnathus communisti or M. primitius conodont
zones.
End Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
-- Overlaps With --
Chinese Stage: Bananian (228 - 219)
Chinese Stage: Huobachengian (219 - 209)
New Zealand Stage: Otamitan (218 - 206)
-- A Substage of --
Eon: Phanerozoic (542 - -5.5012e-005)
Era: Mesozoic (251 - 65.5)
Period: Triassic (251 - 199.6)
Epoch: Late Triassic (228 - 199.6)
ICS Stage: Carnian (228 - 216.5)
-- Preceeded By --
New Zealand Stage: Kaihikuan (232 - 225)
Regional Stage: Julian (228 - 225)
-- Followed By --
ICS Stage: Norian (216.5 - 203.6)
Regional Stage: Lacinian (216.5 - 216)
-- Contains the Following Stages --
New Zealand Stage: Oretian (225 - 218)
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