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Gateway to the Paleobiology Database

Onnian subage/stage

General information
Lower boundary: equal to 452 Ma (based on Harju)
Upper boundary: equal to 449.5 Ma (based on Caradoc)
Continent: Europe
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See map of collections within this interval
Key correlations
Period: Ordovician
Epoch: Late/Upper Ordovician
Stage: middle Late Ordovician
10 million year bin: Ordovician 4
Shares base with
Appears in scales

Interval name: