Gateway to the Paleobiology Database

Helderberg age/stage

General information
Lower boundary: equal to 416 Ma (based on Early/Lower Devonian)
Upper boundary: before 391.9 Ma (based on Emsian)
Continent: North America
See collections within this interval
See map of collections within this interval
Key correlations
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)
  • Interval name: