ammonites

Canadensis zone

General information
Lower boundary: after 196.6 Ma (based on Pseudaetomoceras)
Upper boundary: before 190.7 Ma (based on Plesechioceras harbledownense)
Continent: North America
See collections within this interval
See map of collections within this interval
Key correlations
Period: Jurassic
Epoch: Early/Lower Jurassic
10 million year bin: Jurassic 1
Contained within
  • Aratauran
  • Early/Lower Jurassic
  • Herangi
  • Jurassic
  • Mesozoic
  • Sherman
  • Phanerozoic
    • Previous intervals
  • Franziceras
  • Euphyllites
    • Next interval
  • Tetraspidoceras
    • Shares base with
  • Pseudaetomoceras
    • Shares top with
  • Asteroceras varians, Coroniceras, Plesechioceras harbledownense
    • Overlaps with
  • Sinemurian (196.5 to 189.6 Ma)
  • Late/Upper Sinemurian (196.5 to 189.6 Ma)
  • Early/Lower Sinemurian (196.5 to 189.6 Ma)
  • Arnioceras arnouldi (196.5 to 189.6 Ma)
  • Raricostatum (196.5 to 189.6 Ma)
  • Oxynotum (196.5 to 189.6 Ma)
  • Obtusum (196.5 to 189.6 Ma)
  • Turneri (196.5 to 189.6 Ma)
  • Semicostatum (196.5 to 189.6 Ma)
  • Bucklandi (196.5 to 189.6 Ma)
  • Hettangian (201.6 to 196.5 Ma)
  • Psiloceras (201.6 to 196.5 Ma)
  • Angulata (201.6 to 196.5 Ma)
  • Liasicus (201.6 to 196.5 Ma)
  • Planorbis (201.6 to 196.5 Ma)
  • Late/Upper Hettangian (201.6 to 196.5 Ma)
  • Middle Hettangian (201.6 to 196.5 Ma)
  • Early/Lower Hettangian (201.6 to 196.5 Ma)
    • Appears in scale
  • Palfy North American Ammonite Chrons (2000)

    • Interval name: