ammonites

Roadian age/stage

General information
Lower boundary: equal to 272.5 Ma (see scale)
Upper boundary: equal to 268 Ma (see scale)
Continent: global
See collections within this interval
See map of collections within this interval
Key correlations
Period: Permian
Epoch: Guadalupian
10 million year bin: Permian 3
Contained within
  • Barettian
  • Aparima
  • Rotliegendes
  • Permian
  • Sherman
  • Paleozoic
  • Phanerozoic
    • Previous intervals
  • Ufimian
  • Kungurian
  • Werra
  • Zechsteinkalk
  • Kupferschiefer
  • Weissliegendes
  • Cisuralian
  • Irenian
  • Filipovian
  • Saranian
  • Bolorian
  • Yakhtashian
  • Luodianian
  • Sheshmian
  • Solikamskian
    • Next intervals
  • Wordian
  • Leine
  • Stassfurt Evaporites
  • Hauptdolomitstinkschiefer
  • Word
  • Urzhumian
  • Tatarian
  • Murgabian
  • Late/Upper Urzhumian
  • Early/Lower Urzhumian
    • Equivalent to
  • Kazanian, Kubergandian, Biarmian
    • Contains
  • Early/Lower Kazanian, Late/Upper Kazanian, Povolzhian, Sokian
    • Shares base with
  • Amb, Guadalupian, Kuhfengian
    • Shares top with
  • Leonard, Wolfcamp
    • Appears in scales
  • Pennsylvanian-Permian Stages (2006)
  • Gradstein 7: Stages (2004)
  • Jin Permian Stages (1997)

    • Interval name: