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Cambrian

Phanerozoic
 Cenozoic
  Quaternary
   Anthropocene
   Holocene
   Pleistocene
    Late Pleistocene
    Middle Pleistocene
    Calabrian
    Gelasian
  Neogene
   Pliocene
    Piacenzian
    Zanclean
   Miocene
    Messinian
    Tortonian
    Serravallian
    Langhian
    Burdigalian
    Aquitanian
  Paleogene
   Oligocene
    Chattian
    Rupelian
   Eocene
    Priabonian
    Bartonian
    Lutetian
    Ypresian
   Paleocene
    Thanetian
    Selandian
    Danian
 Mesozoic
  Cretaceous
   Late Cretaceous
    Maastrichtian
    Campanian
    Santonian
    Coniacian
    Turonian
    Cenomanian
   Early Cretaceous
    Albian
    Aptian
    Barremian
    Hauterivian
    Valanginian
    Berriasian
  Jurassic
   Late Jurassic
    Tithonian
    Kimmeridgian
    Oxfordian
   Middle Jurassic
    Callovian
    Bathonian
    Bajocian
    Aalenian
   Early Jurassic
    Toarcian
    Pliensbachian
    Sinemurian
    Hettangian
  Triassic
   Late Triassic
    Rhaetian
    Norian
    Carnian
   Middle Triassic
    Ladinian
    Anisian
   Early Triassic
    Olenekian
    Induan
 Paleozoic
  Permian
   Lopingian
    Changhsingian
    Wuchiapingian
   Guadalupian
    Capitanian
    Wordian
    Roadian
   Cisuralian
    Kungurian
    Artinskian
    Sakmarian
    Asselian
  Carboniferous
   Pennsylvanian
    Gzhelian
    Kasimovian
    Moscovian
    Bashkirian
   Mississippian
    Serpukhovian
    Viséan
    Tournaisian
  Devonian
   Late Devonian
    Famennian
    Frasnian
   Middle Devonian
    Givetian
    Eifelian
   Early Devonian
    Emsian
    Pragian
    Lochkovian
  Silurian
   Pridoli
   Ludlow
    Ludfordian
    Gorstian
   Wenlock
    Homerian
    Sheinwoodian
   Llandovery
    Telychian
    Aeronian
    Rhuddanian
  Ordovician
   Late Ordovician
    Hirnantian
    Katian
    Sandbian
   Middle Ordovician
    Darriwilian
    Dapingian
   Early Ordovician
    Floian
    Tremadocian
  Cambrian
   Furongian
    Cambrian Stage 10
    Jiangshanian
    Paibian
   Cambrian Series 3
    Guzhangian
    Drumian
    Cambrian Stage 5
   Cambrian Series 2
    Cambrian Stage 4
    Cambrian Stage 3
   Terreneuvian
    Cambrian Stage 2
    Fortunian
Precambrian
 Proterozoic
  Neoproterozoic
   Ediacaran
   Cryogenian
   Tonian
  Mesoproterozoic
   Stenian
   Ectasian
   Calymmian
  Paleoproterozoic
   Statherian
   Orosirian
   Rhyacian
   Siderian
 Archean
  Neoarchean
  Mesoarchean
  Paleoarchean
  Eoarchean
 Hadean
  Early Imbrian
  Nectarian
  Basin Groups
  Cryptic
Chaotian
 Neochaotian
  Titanomachean
  Hyperitian
 Eochaotian
  Erebrean
  Nephelean
Hierarchy:Phanerozoic Paleozoic
  Cambrian
Classification:Period (as per International Commission on Stratigraphy)
Top:485.4 ± 1.9 Ma
Base:541 ± 1.0 Ma
Preceeds:Ordovician Early Ordovician  Tremadocian
Follows:Precambrian Proterozoic  Neoproterozoic   Ediacaran
Primary Divisions:FurongianCambrian Series 3Cambrian Series 2Terreneuvian
FGDC code:_
Name origin:Named after Cambria, the Latinised form of Cymru (the Welsh name for Wales) where Britain's Cambrian rocks are best exposed. Name given by Adam Sedgwick in 1835.
Major diversification of life in the Cambrian Explosion.

Numerous fossils; most modern animal phyla appear. First chordates appear, along with a number of extinct, problematic phyla. Reef-building Archaeocyatha abundant; then vanish. Trilobites, priapulid worms,sponges, inarticulate brachiopods (unhinged lampshells), and numerous other animals.

Anomalocarids are giant predators, while many Ediacaran fauna die out. Prokaryotes, protists (e.g., forams), fungi and algae continue to present day.

Gondwana emerges.

Petermann Orogeny on the Australian continent tapers off (550–535 Ma).

Ross Orogeny in Antarctica.

Adelaide Geosyncline (Delamerian Orogeny), majority of orogenic activity from 514–500 Ma.

Lachlan Orogeny on Australian continent, c. 540–440 Ma.

Atmospheric CO2 content roughly 20–35 times present-day (Holocene) levels (6000 ppmv compared to today's 385 ppmv)
 

Geologic Events

Event NameTypeAgeArea
Caledonian orogeny (concludes)Orogeny~505 - ~400 MaEurope
Cambrian explosionEvolutionary event541 - 513 ± 3 MaGlobal
Gondwana formation (concludes)Continental Assembly~550 - ~500 MaGlobal
Damara orogeny (concludes)Orogeny~550 - ~495 MaNamibia
Zambezi Belt orogeny (late) (concludes)Orogeny~550 - ~520 MaZambia and Zimbabwe
Ross orogeny (concludes)Orogeny~550 - ~480 MaAntarctica
Cadomian orogeny (concludes)Orogeny~660 - ~540 MaEurope
Pannotia supercontinent (concludes)Supercontinent750 - 530 MaGlobal


Overview of geological time

List all geological events
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