PHANEROZOIC - VISIBLE LIFE
23.0
1.8
0.0
Carboniferous
Devonian
Permian
Cambrian
Ordivician
Silurian
Triassic
Jurassic
Cretaceous
Palaeogene
Neogene
Quaternary
PALAEOZOIC - ANCIENT LIFE
MESOZOIC - MIDDLE LIFE
CENOZOIC - NEW LIFE
FOSSIL COLLECTION - NAVIGATION
TIMESCALE (GIVEN IN Ma UNITS) IS IN ACCORDANCE WITH THE ICS INTERNATIONAL STRATIGRAPHIC CHART. IT IS NOT TO SCALE.
Reproduced with the permission of the British Geological Survey ©NERC. All Rights Reserved
