ammonites

Cayugan epoch

General information
Lower boundary: equal to 422.9 Ma (based on Gorstian)
Upper boundary: equal to 416 Ma (based on Pridoli)
Continent: North America
See collections within this interval
See map of collections within this interval
Key correlations
Period: Silurian
10 million year bin: Silurian 2
Contained within
  • Sherman
  • Paleozoic
  • Phanerozoic
    • Previous intervals
  • Wenlock
  • Gleedonian
  • Wenlock (England)
  • Tickwood
  • Coalbrookdale
  • Litenschichten
  • Mulde
  • Lockportian
  • Homerian
  • Rootsikula
  • Jaagarahu
  • Niagaran
  • Lockport
  • Chagyrka
    • Next intervals
  • Devonian
  • Early/Lower Devonian
  • Lochkovian
  • Ditton
  • Gedinnine
  • Gedinne
  • Lochkovian (Czechoslovakia)
  • Helderberg
    • Equivalent to
  • Salina
    • Contains
  • Burgsvik, Eke, Hamra, Kuressaare, Leintwardine, Ludfordian, Whitcliffe
    • Shares base with
  • Bringewood, Elton, Gorstian, Kuimov, Ludlow, Paadla
    • Shares top with
  • Downton Castle, Kaugetuma, Ohesaare, Pridoli, Pridolischichten, Red Downtonian, Silurian, Sundre, Temeside Shales, unnamed Pridoli stage
    • Overlaps with
  • Downton (418.7 to 412.3 Ma)
  • Kopaninaschichten (425.4 to 418.7 Ma)
  • Hemse (425.4 to 418.7 Ma)
    • Appears in scales
  • North American Silurian Epochs (2011)
  • Harland Silurian of North America (1990)

    • Interval name: