ammonites

Streffordian age/stage

General information
Lower boundary: after 455.8 Ma (based on Katian)
Upper boundary: equal to 449.5 Ma (based on Caradoc)
Continent: Europe
See collections within this interval
See map of collections within this interval
Key correlations
Period: Ordovician
Epoch: Late/Upper Ordovician
Stage: middle Late Ordovician
10 million year bin: Ordovician 4
Contained within
  • Bohdalec
  • Sherman
  • Late/Upper Ordovician
  • Aijiashan
  • Xiaoxita
  • Shikou
  • Ordovician
  • Paleozoic
  • Phanerozoic
    • Previous intervals
  • Longvillian
  • Soudleyan
  • Harnagian
  • Zahorany
  • Vinice
  • Letna
  • Keila
  • Idavere
  • Kirkfield
  • Rockland
  • Burrellian
  • early Late Ordovician
  • Sandbian
    • Next intervals
  • Ashgill
  • Cautleyan
  • Pusgillian
  • Kraluv Dvur
  • Pirgu
  • Richmond
  • Gamachian
  • Richmondian
  • Kralodvorian
  • Bolindian
  • Qiantianjiang
  • Wufeng
  • Chientangkiangian
  • Ashgillian
    • Shares base with
  • Actonian, Cheneyan, Katian, Marshbrookian, Rakvere, Rawtheyan, Woolstonian, middle Late Ordovician
    • Shares top with
  • Ashbyan, Berounian, Blackriveran, Caradoc, Caradocian, Chatfieldian, Eastonian, Edenian, Franklinian, Haljala, Hanjiang, Johvi, Kirkfieldian, Kukruse, Late/Upper Llandeilo, Llandeilo, Maysvillian, Middle Llandeilo, Nabala, Neichiashanian, Onnian, Rocklandian, Shermanian, Trentonian, Turinian, Wildernessian
    • Overlaps with
  • Harju (452.0 to 443.7 Ma)
  • Vormsi (452.0 to 445.6 Ma)
  • Maysville (452.0 to 445.6 Ma)
  • Cincinnatian (452.5 to 443.7 Ma)
  • Oandu (457.5 to 452.0 Ma)
  • Mohawkian (457.5 to 452.5 Ma)
  • Viru (463.5 to 452.0 Ma)
    • Appears in scales
  • British Ordovician Stages (2006)
  • Webby 1998 British Stages (1998)

    • Interval name: