ammonites

Late/Upper Hemingfordian subage/stage

General information
Lower boundary: after 20.43 Ma (based on Burdigalian)
Upper boundary: equal to 15.97 Ma (based on Burdigalian)
Continent: North America
See collections within this interval
See map of collections within this interval
Key correlations
Period: Neogene
Epoch: Miocene
Subepoch: Early/Lower Miocene
Stage: Burdigalian
10 million year bin: Cenozoic 5
Contained within
  • Burdigalian
  • Hemingfordian
  • Pareora
  • Miocene
  • Neogene
  • Tertiary
  • Cenozoic
  • Phanerozoic
    • Previous intervals
  • Aquitanian
  • Arikareean
  • late Late Arikareean
  • early Late Arikareean
  • late Early Arikareean
  • early Early Arikareean
  • Harrisonian
    • Next intervals
  • Middle Miocene
  • Langhian
  • Barstovian
  • late Late Barstovian
  • early Late Barstovian
  • Early/Lower Barstovian
  • Astaracian
  • MN 5
    • Contains
  • MN 3, Santacrucian
    • Shares top with
  • Early/Lower Miocene, MN 4, Orleanian
    • Overlaps with
  • Friasian (16.3 to 15.5 Ma)
  • Shanwangian (16.9 to 13.65 Ma)
  • Altonian (19.0 to 15.9 Ma)
  • Early/Lower Hemingfordian (20.43 to 15.97 Ma)
  • Colhuehuapian (21.0 to 17.5 Ma)
  • Otaian (21.7 to 19.0 Ma)
  • MN 2 (22.4 to 20.0 Ma)
  • Xiejiaan (23.03 to 16.9 Ma)
  • Agenian (23.03 to 20.0 Ma)
    • Appears in scale
  • North American Mammal Subages/Zones: Arikareean - Rancholabrean (1987)

    • Interval name: