Period 2
Cenozoic Era
Mesozoic Era
Paleozoic Era
Mesozoic Era
Precambrian Era
Precambrian Era
Mesozoic Era
Paleozoic Era
Period 4
Cenozoic Era
Pre-Cambrian Era
Paleozoic Era
Mesozoic Era
Paleozoic Era
Mesozoic Era
Period 6
Paleozoic Era
Mesozoic Era
Cenozoic Era