ammonites

Fennian age/stage

General information
Lower boundary: equal to 471.8 Ma (based on Dapingian)
Upper boundary: equal to 466 Ma (based on Arenig)
Continent: Europe
See collections within this interval
See map of collections within this interval
Key correlations
Period: Ordovician
Epoch: Middle Ordovician
10 million year bin: Ordovician 2
Contained within
  • Yangtzi
  • Oeland
  • Ordovician
  • Paleozoic
  • Phanerozoic
    • Previous intervals
  • Early/Lower Ordovician
  • Latorp
  • Ibexian
  • Blackhillsian
  • Tulean
  • Whitlandian
  • Moridunian
  • Billingen
  • Hunneberg
  • Latorpian
  • late Early Ordovician
  • Floian
    • Next intervals
  • Llandeilo
  • Llanvirn
  • Early/Lower Llandeilo
  • Early/Lower Llanvirn
  • Dobrotiva
  • Uhaku
  • Chazy
  • Llandeilian
  • Abereiddian
  • Oretanian
  • Aluoja
    • Contains
  • Hunderum, Valaste
    • Shares base with
  • Dapingian, Langevoja, Middle Ordovician, Rangerian, Saka, Vaana, Volkhov, Volkhovian, Whiterockian, early Middle Ordovician
    • Shares top with
  • Arenig, Klabava, Sarka, Yapeenian
    • Overlaps with
  • Whiterock (468.1 to 460.9 Ma)
  • Darriwilian (468.1 to 460.9 Ma)
  • Llanvirnian (468.1 to 460.9 Ma)
  • Guniu (468.1 to 460.9 Ma)
  • Hulo (468.1 to 460.9 Ma)
  • Zhejiangian (468.1 to 460.9 Ma)
  • Chazyan (468.1 to 460.9 Ma)
  • Marmor (468.1 to 460.9 Ma)
  • Kunda (468.1 to 463.5 Ma)
  • Castlemainian (472.0 to 468.9 Ma)
  • Cassinian (478.6 to 468.1 Ma)
  • Arenigian (478.6 to 468.1 Ma)
  • Dawan (478.6 to 468.1 Ma)
  • Daobaowan (478.6 to 468.1 Ma)
  • Ningkuo (478.6 to 468.1 Ma)
  • Yushanian (478.6 to 468.1 Ma)
  • Valhallan (478.6 to 468.1 Ma)
  • Jefferson (488.3 to 468.1 Ma)
  • Hunjiang (488.3 to 468.1 Ma)
  • Canadian (488.3 to 468.1 Ma)
  • Jeffersonian (488.3 to 468.1 Ma)
    • Appears in scales
  • British Ordovician Stages (2006)
  • Webby 1998 British Stages (1998)

    • Interval name: