Stratigraphy
Pakerort Stage
25
Stratigraphy
Index
Index add'l
Type
Rank
Scope
Belongs to
Age (Ma)
Age
Base
Top
Vihula Substage
AIIa
chronostratigraphy
Substage
regional
Pakerort Stage489.8488.3
Pakerort Stage
Karepa Substage
AIIb
chronostratigraphy
Substage
regional
Pakerort Stage488.3486.2
Tremadocian
25
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