ammonites

Idamean age/stage

General information
Lower boundary: after 501 Ma (based on Furongian)
Upper boundary: equal to 498.5 Ma (see scale)
Continent: Australia
See collections within this interval
See map of collections within this interval
Key correlations
Period: Cambrian
Epoch: Furongian
10 million year bin: Cambrian 4
Contained within
  • Paibian
  • Cambrian
  • Paleozoic
  • Phanerozoic
    • Previous intervals
  • St Davids
  • Menevian
  • Solvan
  • Clogau
  • Gamlan
  • Barmouth
  • Hafotty
  • Albertian
  • Middle Cambrian
  • Mayan
  • Boomerangian
  • Wangcunian
  • Zhanarykian
  • Arcadian
  • Wulingian
    • Next intervals
  • Ketyan
  • Yurakian
  • Iverian
  • Taoyuanian
  • Sunwaptan
  • Batyrbaian
  • Aksayan
  • Niuchehean
    • Shares base with
  • Dolgellian, Dolgelly, Dresbachian, Ffestiniog, Franconian, Furongian, Guzhangian, Maentwrog, Maentwrogian, Merioneth, Merionethian, Millardan, Olentian, Sakian, Steptoean, Tavgian, Trempealeauan
    • Shares top with
  • Ayusokkanian, Lincolnian, Marjumian
    • Overlaps with
  • Ensyan (501.0 to 498.5 Ma)
  • Maduan (501.0 to 498.5 Ma)
  • Nganasanian (501.0 to 498.5 Ma)
  • Mindyallan (501.0 to 498.5 Ma)
  • Waergangian (501.0 to 498.5 Ma)
  • Youshuanian (501.0 to 498.5 Ma)
    • Appears in scale
  • Gradstein Cambrian-Middle Ordovician of Australasia (2004)

    • Interval name: