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Stratigraphy
Permian
Belongs toPaleozoic
Typechronostratigraphy
RankSystem
Scopeglobal
Statusformal standard
AuthorRoderick I. Murchison
Year1841
EtymonAncient kingdom of Permia
Age top (Ma)251.902
Age base (Ma)298.9
Age (Ma)Paleozoic
Index
P
Date changed2022-11-04
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