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Stratigraphy
Viru Series
Stratigraphy
Index
Index add'l
Type
Rank
Scope
Belongs to
Age (Ma)
Age
Base
Top
Purtse Subseries
chronostratigraphy
Subseries
regional
Viru Series463.8458.2
Ordovician
Kurna Subseries
chronostratigraphy
Subseries
regional
Viru Series458.2454.2
Upper Ordovician
Vinni Subseries
chronostratigraphy
Subseries
regional
Viru Series454.2452.0
Katian
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