| Norian |
|---|
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−255 — – −250 — – −245 — – −240 — – −235 — – −230 — – −225 — – −220 — – −215 — – −210 — – −205 — – −200 — | | | ← | Full recovery of woody trees |
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| Name formality | Formal |
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| Celestial body | Earth |
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| Regional usage | Global (ICS) |
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| Time scale(s) used | ICS Time Scale |
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| Chronological unit | Age |
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| Stratigraphic unit | Stage |
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| Time span formality | Formal |
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| Lower boundary definition | Not formally defined |
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| Lower boundary definition candidates | Base of Stikinoceras kerri ammonoid zone and near FAD of Metapolygnathus echinatus within the M. communisti Conodont zones |
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| Lower boundary GSSP candidate section(s) |
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| Upper boundary definition | Not formally defined |
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| Upper boundary definition candidates |
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| Upper boundary GSSP candidate section(s) |
- Steinbergkogel, Austria
- Pignola-Abriola, Italy
- Turkey
- British Columbia, Canada
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The Norian is a division of the Triassic Period. It has the rank of an age (geochronology) or stage (chronostratigraphy). It lasted from ~227.3 to 205.7 million years ago. It was preceded by the Carnian and succeeded by the Rhaetian.