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Earth history periods and times
the times of all periods and eons in the timescale
13
Geology
Undergraduate 3
10/02/2012
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Term
1.8-65 Ma
 Definition
Tertiary: Neogene then Paleogene
Term
65-142 Ma
 Definition
Cretaceous
Term
142-206 Ma
 Definition
Jurassic
Term
206-243 Ma
 Definition
Triassic
Term
243-290 Ma
 Definition
Permian
Term
290-355 Ma
 Definition
Carboniferous: Pennsylvanian then Mississippean
Term
355- 415 Ma
 Definition
Devonian
Term
415-445 Ma
 Definition
Silurian
Term
445-495 Ma
 Definition
Ordovician
Term
495-550 Ma
 Definition
Cambrian
Term
550-2500 Ma
 Definition
Proterozoic
Term
2500- 3750 Ma
 Definition
Archean
Term
0-1.8
 Definition
Quaternary
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