ammonites

Middle Cambrian epoch

General information
Lower boundary: equal to 513 Ma (see scale)
Upper boundary: equal to 501 Ma (see scale)
Continent: global
See collections within this interval
See map of collections within this interval
Key correlations
Period: Cambrian
10 million year bin: Cambrian 3
Contained within
  • Cambrian
  • Paleozoic
  • Phanerozoic
    • Previous intervals
  • Caerfai
  • Lenian
  • Rhinog
  • Waucoban
  • Toyonian
  • Botomian
  • Early/Lower Cambrian
  • Ordian
  • Duyunian
  • Nangaoian
  • Dyeran
  • Branchian
  • Qiandongian
    • Next intervals
  • Merioneth
  • Dolgellian
  • Maentwrogian
  • Dolgelly
  • Ffestiniog
  • Maentwrog
  • Trempealeauan
  • Franconian
  • Dresbachian
  • Olentian
  • Furongian
  • Ensyan
  • Maduan
  • Tavgian
  • Nganasanian
  • Idamean
  • Mindyallan
  • Waergangian
  • Youshuanian
  • Millardan
  • Steptoean
  • Sakian
  • Merionethian
  • Paibian
    • Equivalent to
  • St Davids, Albertian, Arcadian, Wulingian
    • Contains
  • Barmouth, Clogau, Floran, Gamlan, Hafotty, Menevian, Solvan, Undillan
    • Shares base with
  • Amgan, Delamaran, Lincolnian, Marjumian, Taijangian, Templetonian, Tyesaian
    • Shares top with
  • Boomerangian, Guzhangian, Mayan, Wangcunian, Zhanarykian
    • Overlaps with
  • Ayusokkanian (505.0 to 498.5 Ma)
    • Appears in scale
  • Gradstein 5: Epochs (2004)

    • Interval name: