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    Late Pleistocene
    Middle Pleistocene
   Late Cretaceous
   Early Cretaceous
   Late Jurassic
   Middle Jurassic
   Early Jurassic
   Late Triassic
   Middle Triassic
   Early Triassic
   Late Devonian
   Middle Devonian
   Early Devonian
   Late Ordovician
   Middle Ordovician
   Early Ordovician
    Cambrian Stage 10
   Cambrian Series 3
    Cambrian Stage 5
   Cambrian Series 2
    Cambrian Stage 4
    Cambrian Stage 3
    Cambrian Stage 2
  Early Imbrian
  Basin Groups
Hierarchy:Phanerozoic Mesozoic  Jurassic   Middle Jurassic
Classification:Age (as per International Commission on Stratigraphy)
Top:168.3 ± 1.3 Ma
Base:170.3 ± 1.4 Ma
Name origin:Named is from the Latin name (Bajocae) of the town of Bayeux, in the region of Normandy in France, introduced by French palaeontologist Alcide d'Orbigny in 1842.
GSSP:Murtinheira Section, Cabo Mondego, Portugal
GSSP location:40.1992°N, 8.9042°W
GSSP link:View Global Boundary Stratotype Section and Point of the International Commission on Stratigraphy
The base of the Bajocian stage is defined as the place in the stratigraphic column where fossils of the ammonite genus Hyperlioceras first appear.

The top of the Bajocian (the base of the Bathonian) is at the first appearance of ammonite species Parkinsonia convergens.

Geologic Events

Event NameTypeAgeArea
Pangaea breakup (ongoing)Continental Breakup175 - 55 MaGlobal
Andean orogeny (ongoing)OrogenyMaximum Age: 200 MaSouth America
Laurasia supercontinent (ongoing)Supercontinent215 - 55 MaNorthern Hemisphere

Overview of geological time

List all geological events
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