Stratigraphy
Ordovician
25
Stratigraphy
Index
Index add'l
Type
Rank
Scope
Belongs to
Age (Ma)
Age
Base
Top
Öland Series
chronostratigraphy
Series
regional
Baltic Ordovician489.8463.8
Ordovician
Latorp Superstage
BI
chronostratigraphy
Superstage
regional
Ontika Subseries483.4471.8
Ordovician
Hunneberg Stage
BIa
O1HN
chronostratigraphy
Stage
regional
Latorp Superstage483.4476.4
Ordovician
Baltic Ordovician
chronostratigraphy
System
regional
Baltic chronostratigraphy
Ordovician
Ontika Subseries
chronostratigraphy
Subseries
regional
Öland Series483.4463.8
Ordovician
Purtse Subseries
chronostratigraphy
Subseries
regional
Viru Series463.8458.2
Ordovician
25
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