120 - 114
114 - 108
108 - 102
102 - 96
96 - 90
30M
120 - 90 M
6M
1st Galactic year 250 to present
Phanerozoic Era 543 - Present
Cretaceous Period 144 - 65
Mesozoic Era (Middle Life) 248 - 65
 
- 100 Common genetic ancestor of mice and humans.