ammonites
banner
Gateway to the Paleobiology Database

Bortonian age/stage

General information
Lower boundary: equal to 43 Ma (see scale)
Upper boundary: equal to 37.2 Ma (based on Bartonian)
Continent: New Zealand
See collections within this interval
See map of collections within this interval
Key correlations
Period: Paleogene
Epoch: Eocene
Subepoch: Middle Eocene
Previous intervals
Shares base with
Overlaps with
  • Divisaderan (42.0 to 36.0 Ma)
  • Uintan (46.2 to 40.4 Ma)
  • Late/Upper Uintan (46.2 to 40.4 Ma)
  • Early/Lower Uintan (46.2 to 40.4 Ma)
  • Mustersan (48.0 to 42.0 Ma)
  • Lutetian (48.6 to 40.4 Ma)
  • MP 15 (48.6 to 40.4 Ma)
  • MP 14 (48.6 to 40.4 Ma)
  • MP 13 (48.6 to 40.4 Ma)
  • MP 12 (48.6 to 40.4 Ma)
  • MP 11 (48.6 to 40.4 Ma)
  • Interval name: