Gateway to the Paleobiology Database

Rangerian age/stage

General information
Lower boundary: equal to 471.8 Ma (based on Dapingian)
Upper boundary: equal to 468.1 Ma (based on Dapingian)
Continent: North America
See collections within this interval
See map of collections within this interval
Key correlations
Period: Ordovician
Epoch: Middle Ordovician
Stage: early Middle Ordovician
10 million year bin: Ordovician 2
Overlaps with
  • Yapeenian (468.9 to 466.0 Ma)
  • Castlemainian (472.0 to 468.9 Ma)
  • Interval name: