ammonites
banner
Gateway to the Paleobiology Database

Chattian age/stage

General information
Lower boundary: equal to 28.4 Ma (see scale)
Upper boundary: equal to 23.03 Ma (see scale)
Continent: global
See collections within this interval
See map of collections within this interval
Key correlations
Period: Paleogene
Epoch: Oligocene
Subepoch: Late/Upper Oligocene
10 million year bin: Cenozoic 4
Overlaps with
  • Harrisonian (24.8 to 20.43 Ma)
  • Waitakian (25.2 to 21.7 Ma)
  • Geringian (30.8 to 26.3 Ma)
  • Whaingaroan (34.3 to 27.3 Ma)
  • Interval name: