ammonites

Porkuni age/stage

General information
Lower boundary: equal to 445.6 Ma (based on Hirnantian)
Upper boundary: equal to 443.7 Ma (based on Rhuddanian)
Continent: Europe
See collections within this interval
See map of collections within this interval
Key correlations
Period: Ordovician
Epoch: Late/Upper Ordovician
Stage: Hirnantian
10 million year bin: Ordovician 5
Contained within
  • Sherman
  • Paleozoic
  • Phanerozoic
    • Previous intervals
  • Rawtheyan
  • Cautleyan
  • Pusgillian
  • Kraluv Dvur
  • Bohdalec
  • Pirgu
  • Vormsi
  • Richmond
  • Maysville
  • Kralodvorian
  • middle Late Ordovician
  • Katian
    • Next intervals
  • Silurian
  • Llandovery
  • Rhuddanian
  • Cowleigh Park
  • Litenschichten
  • Alexandrian
  • Raikkula
  • Juuru
  • Niagaran
  • Medina
  • Vtorye Utesy
    • Equivalent to
  • Hirnantian, Kosov, Gamach, Kosovian, late Late Ordovician
    • Shares top with
  • Aijiashan, Ashgill, Ashgillian, Bolindian, Chientangkiangian, Cincinnatian, Gamachian, Harju, Late/Upper Ordovician, Ordovician, Qiantianjiang, Richmondian, Shikou, Wufeng, Xiaoxita
    • Appears in scales
  • Gradstein Ordovician-Silurian of Baltica (2004)
  • Webby 1998 Baltic Stages (1998)
  • Harland Ordovician of Estonia (1990)

    • Interval name: