Norian ICS Stage
From 216.5 +/- 2 To 203.6 +/- 1.5 Ma
Start Defined By: Base of Klamathites macrolobatus or Stikinoceras kerri
ammonoid zones and the Metapolygnathus communisti or M. primitius conodont
zones.
End Defined By: Near lowest occurrence of ammonite Cochlocera, conodonts
Misikella spp. and Epigondolella mosheri, and radiolarian Proparvicingula
moniliformis.
Start Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
End Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
-- Overlaps With --
Chinese Stage: Huobachengian (219 - 209)
Chinese Stage: Erqiaoan (209 - 199.6)
New Zealand Stage: Otamitan (218 - 206)
New Zealand Stage: Warepan (206 - 203)
-- 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)
-- Preceeded By --
ICS Stage: Carnian (228 - 216.5)
Regional Stage: Tuvalian (225 - 216.5)
-- Followed By --
ICS Stage: Rhaetian (203.6 - 199.6)
-- Contains the Following Stages --
Regional Stage: Lacinian (216.5 - 216)
Regional Stage: Alaunian (216 - 211)
Regional Stage: Sevatian (211 - 203.6)
|
