https://gcmd.earthdata.nasa.gov/kms/concept/11fdca69-e5fb-4b41-97e5-de678fd7eade
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definition | The Norian is a division of the Triassic geological period. It has the rank of an age (geochronology) or stage (chronostratigraphy). The Norian lasted from ~227 to 208.5 million years ago. It was preceded by the Carnian and succeeded by the Rhaetian. | |||||||||
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in scheme | chronounits original |