ammonites

Epizigzagiceras zone

General information
Lower boundary: equal to 168.4 Ma (see scale)
Upper boundary: equal to 167.7 Ma (based on Bajocian)
Continent: North America
See collections within this interval
See map of collections within this interval
Key correlations
Period: Jurassic
Epoch: Middle Jurassic
Stage: Bajocian
10 million year bin: Jurassic 4
Contained within
  • Middle Jurassic
  • Temaikan
  • Kawhia
  • Jurassic
  • Mesozoic
  • Sherman
  • Phanerozoic
    • Previous intervals
  • Early/Lower Bajocian
  • Rotundum
  • Oblatum
  • Kirschneri
  • Crassicostatus
  • Widebayense
  • Humphresianum
    • Next intervals
  • Bathonian
  • Late/Upper Bathonian
  • Middle Bathonian
  • Early/Lower Bathonian
    • Shares top with
  • Bajocian, Discites, Garantiana, Laeviuscula, Late/Upper Bajocian, Parkinsoni, Sauzei, Subfurcatum
    • Appears in scale
  • Palfy North American Ammonite Chrons (2000)

    • Interval name: