Geologic Time
Fossil Mall
Science Section
   

Also see:
Tree of Life for Fossil Collectors
Geologic Time Chart
Geologic Time Chart Denoting Fossil Sites
 
 

Chart of Geologic Time

 

 

 

 

 

 

Geological Timescale sensu the International Union of Geological Sciences: International Commission with official IUGS and ICS color schema.

Eon

Era

Period

End (ma)

Start (ma)

P
h
e
n
e
r
o
z
o
i
c

Cenozoic

Neogene
0 Ma
23.03

Paleogene
23.03
65.5

Mesozoic

Cretaceous
65.5
145.5

Jurassic
145.5
199.6

Triassic
199.6
251.0

Paleozoic

Permian
251.0
299.0

Carboniferous
299.0
359.2

Devonian
359.2
416.0

Silurian
416.0
443.7

Ordovician
443.7
488.3

Cambrian
488.3
542.0

P
r
o
t
e
r
o
t
z
o
i
c

Neoproterozoic

Ediacaran
[Vendian]
542.0
650

Cryogenian
650
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

A
r
c
h
e
a
n

Neoarchean

 
2500
2800

Mesoarchean

 
2800
3200

Paleoarchean

 
3200
3600

Eoarchean

 
3600
4000
H
a
d
e
a
n

 

 

4000

4567