ammonites

Canadian epoch

General information
Lower boundary: equal to 488.3 Ma (based on Tremadocian)
Upper boundary: equal to 468.1 Ma (based on Dapingian)
Continent: North America
See collections within this interval
See map of collections within this interval
Key correlations
Period: Ordovician
Contained within
  • Paleozoic
  • Phanerozoic
    • Previous intervals
  • Cambrian
  • Merioneth
  • Dolgellian
  • Maentwrogian
  • Dolgelly
  • Ffestiniog
  • Maentwrog
  • Trempealeauan
  • Franconian
  • Dresbachian
  • Furongian
  • Ketyan
  • Yurakian
  • Tavgian
  • Payntonian
  • Taoyuanian
  • Millardan
  • Sunwaptan
  • Steptoean
  • Batyrbaian
  • Aksayan
  • Sakian
  • Merionethian
  • Niuchehean
    • Next intervals
  • Kunda
  • Whiterock
  • Darriwilian
  • Llanvirnian
  • Guniu
  • Hulo
  • Zhejiangian
  • Chazyan
  • Marmor
    • Contains
  • Bendigonian, Billingen, Blackhillsian, Castlemainian, Chewtonian, Floian, Hunjiang, Hunneberg, Jefferson, Jeffersonian, Latorp, Latorpian, Moridunian, Whitlandian, late Early Ordovician
    • Shares base with
  • Cressagian, Datsonian, Deming, Demingian, Early/Lower Ordovician, Gasconadian, Ibexian, Ichangian, Lancefieldian, Lianghekou, Mansian, Migneintian, Oeland, Ordovician, Pakerort, Skullrockian, Stairsian, Tremadoc, Tremadocian, Tulean, Ungurian, Varangu, Warendian, Yichang
    • Shares top with
  • Arenigian, Cassinian, Daobaowan, Dapingian, Dawan, Langevoja, Ningkuo, Rangerian, Saka, Vaana, Valhallan, Volkhov, Volkhovian, Yushanian, early Middle Ordovician
    • Overlaps with
  • Yapeenian (468.9 to 466.0 Ma)
  • Whiterockian (471.8 to 457.5 Ma)
  • Middle Ordovician (471.8 to 460.9 Ma)
  • Fennian (471.8 to 466.0 Ma)
  • Valaste (471.8 to 466.0 Ma)
  • Hunderum (471.8 to 466.0 Ma)
  • Yangtzi (478.6 to 460.9 Ma)
  • Arenig (478.6 to 466.0 Ma)
  • Klabava (478.6 to 466.0 Ma)
  • Olentian (501.0 to 484.5 Ma)
    • Appears in scale
  • Ross et al. 1982 Ordovician North American Series II (1982)

    • Interval name: