ammonites

Visean age/stage

General information
Lower boundary: equal to 345.3 Ma (see scale)
Upper boundary: equal to 326.4 Ma (see scale)
Continent: global
See collections within this interval
See map of collections within this interval
Key correlations
Period: Carboniferous
Epoch: Middle Mississippian
Contained within
  • Mississippian
  • Carboniferous
  • Sherman
  • Paleozoic
  • Phanerozoic
    • Previous intervals
  • Tournaisian
  • Ivorian
  • Early/Lower Mississippian
  • Kizolovian
  • Tangbagouan
    • Next intervals
  • Serpukhovian
  • Arnsbergian
  • Pendleian
  • Namurian
  • Late/Upper Mississippian
  • Zapaltyubian
  • Protvian
  • Steshevian
  • Tarussian
  • Dewunian
    • Equivalent to
  • Middle Mississippian
    • Contains
  • Aleksian, Arundian, Asbian, Bobrikovian, Holkerian, Meramecian, Mikhailovian, Tulian
    • Shares base with
  • Chadian, Jiusian, Radaevian
    • Shares top with
  • Brigantian, Shangsian, Venevian
    • Overlaps with
  • Chesterian (339.4 to 318.1 Ma)
  • Osagean (353.8 to 342.8 Ma)
  • Kosvinian (353.8 to 345.0 Ma)
    • Appears in scales
  • Subcommission on Carboniferous Stratigraphy Global Stages (2006)
  • Gradstein 7: Stages (2004)
  • Harland 4: Epochs (1990)

    • Interval name: