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Cambrian

Period ranging from 542 million years ago until 488 million years ago.
Cambrian explosion of life. Development of algae and animals with armor. In this period there were many species of trilobitesClick here for more Information!, jellyfish, spongesClick here for more Information!, graptolitesClick here for more Information!, echinoderms, brachiopodsClick here for more Information! en inkfish. First primitive vertebrates, primitive fishes and (sea)plants (psilophytes).

Period
Epoch
Stage
Age (in Milion years) *
Cambrian period
Upper (Furongian)
 
488 - 501
Paibian
Middle
 
501 - 513
 
Lower
 
513 - 542
 
  * Age is rounded

Click here for locations from this period.
Go to the Photo page to view photographs of fossils from the Cambrian.

Precambrian

The Precambrian consists of several parts. The name Precambrian is not an "eon"anymore is the most recent stratigraphic charts. In the Archaeļc (3800 to 2500) fossils ara found from cyanobacteria in sea deposits.; stromatolitesClick here for more information!. From the lower and middle Proterozoļc (2500 to 1000) colony forming bacteria (without nucleus) are known followed by Eucariotic bacteria (with nucleus). From the upper Proterozoļc (1000 to 542) the first colony forming animals are known like sponges.

Eon:
Era:
Period:
Age (in Milion years) *
Precambrian period
Proterozoic
Neoproterozoic
Ediacarian
542 - 630
Cryogenian
630 - 850
Tonian
850 - 1000
Mesoproterozoic
Stenian
1000 - 1200
Ectasian
1200 - 1400
Calymmian
1400 - 1600
Paleoproterozoic
Statherian
1600 - 1800
Orosirian
1800 - 2050
Rhyacian
2050 - 2300
Siderian
2300 - 2500
Archaeic
Neoarchaeic
2500 - 2800
Mesoarchaeic
2800 - 3200
Paleoarchaeic
3200 - 3600
Eoarchaeic
no lower limit - 3600
  * Age is rounded


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