Biostratigraphic timescale Flashcards
1
Q
Eons
A
Hadean
Archaean
Proterozoic
Phanerozoic
2
Q
Eras
A
Palaeozoic
Mesozoic
Cenozoic
3
Q
Periods
A
Cambrian
Ordovician
Silurian
Devonian
Carboniferous
Permian
Triassic
Jurassic
Cretaceous
Palaeogene
Neogene
Quaternary
4
Q
Hadean eon
A
4500-4000 Ma
5
Q
Archaean eon
A
4000-2500 Ma
6
Q
Proterozoic eon
A
2500-541 Ma
7
Q
Phanerozoic eon
A
541-0 Ma
8
Q
Palaeozoic era
A
541-252 Ma
9
Q
Mesozoic era
A
252-66 Ma
10
Q
Cenozoic era
A
66-0 Ma
11
Q
Cambrian period
A
541-485 Ma
12
Q
Ordovician period
A
485-444 Ma
13
Q
Silurian period
A
444-419 Ma
14
Q
Devonian period
A
419-359 Ma
15
Q
Carboniferous period
A
359-299 Ma
16
Q
Permian period
A
299-252 Ma
17
Q
Triassic period
A
252-201 Ma
18
Q
Jurassic period
A
201-145 Ma
19
Q
Cretaceous period
A
145-66 Ma
20
Q
Palaeogene period
A
66-23 Ma
21
Q
Neogene period
A
23-2.5 Ma
22
Q
Quaternary period
A
2.5-0 Ma
23
Q
Holocene epoch
A
11.8-0 ka
