ammonites

Holkerian subage/stage

General information
Lower boundary: equal to 342.8 Ma (see scale)
Upper boundary: equal to 339.4 Ma (see scale)
Continent: Europe
See collections within this interval
See map of collections within this interval
Key correlations
Period: Carboniferous
Epoch: Middle Mississippian
Stage: Visean
10 million year bin: Carboniferous 2
Contained within
  • Meramecian
  • Visean
  • Middle Mississippian
  • Mississippian
  • Carboniferous
  • Sherman
  • Paleozoic
  • Phanerozoic
    • Previous intervals
  • Arundian
  • Osagean
  • Bobrikovian
    • Next intervals
  • Asbian
  • Chesterian
  • Mikhailovian
  • Shangsian
    • Contains
  • Aleksian, Tulian
    • Shares top with
  • Jiusian
    • Appears in scales
  • Mississippian Substages of Europe (2008)
  • Subcommission on Carboniferous Stratigraphy European Substages (2006)
  • Gradstein Carboniferous Stages of Western Europe (2004)
  • Harland 6: Stages (1990)

    • Interval name: