ammonites

Early/Lower Devonian epoch

General information
Lower boundary: equal to 416 Ma (see scale)
Upper boundary: equal to 391.9 Ma (based on Emsian)
Continent: global
See collections within this interval
See map of collections within this interval
Key correlations
Period: Devonian
Contained within
  • Sherman
  • Paleozoic
  • Phanerozoic
    • Previous intervals
  • Silurian
  • Pridoli
  • Red Downtonian
  • Temeside Shales
  • Downton Castle
  • Pridolischichten
  • Sundre
  • Cayugan
  • unnamed Pridoli stage
  • Ohesaare
  • Kaugetuma
  • Salina
    • Next intervals
  • Middle Devonian
  • Eifelian
  • Hangman
  • Eifel
  • Chotec
  • Cazenovia
  • Southwood
    • Contains
  • Early/Lower Emsian, Helderberg, Pragian, Siegen
    • Shares base with
  • Devonian, Ditton, Gedinne, Gedinnine, Lochkovian, Lochkovian (Czechoslovakia)
    • Shares top with
  • Brecon, Coblencien, Deer Park, Ems, Emsian, Late/Upper Emsian, Pragian (Czechoslovakia), Sawkill, Zlichovian
    • Overlaps with
  • Couvinien (409.1 to 383.7 Ma)
  • Lynton (409.1 to 388.1 Ma)
  • Daleje (409.1 to 388.1 Ma)
  • Downton (418.7 to 412.3 Ma)
    • Appears in scales
  • Silurian Epochs (2011)
  • Gradstein 5: Epochs (2004)
  • Harland 4: Epochs (1990)

    • Interval name: