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Series:
Lower
(485.4 - 470.0 Ma)
(chronostratigraphic unit)
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Classification by:
Systema Naturae 2000
Sepkoski (2002) A Compendium of Fossil Marine Animal Genera
stratigraphic intervals
(System) †
Ordovician
(485.4 - 443.8 Ma)
(Series) †[
Lower
]
(485.4 - 470.0 Ma)
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Last updated:
1 Feb 2024