210 - 204
204 - 198
198 - 192
192 - 186
186 - 180
210-180
180-150
30M
210 - 180 M
6M
60-30
30-0
150-120
1st Galactic year 250 to present
Phanerozoic Era 543 - Present
Triassic Period 248 - 206
Jurassic Period 206 - 144
Mesozoic Era (Middle Life) 248 - 65