Paleo Timeline

Cenozoic

1 - 1800000
1800000 - 65000000

mesozoic

65000000 - 144000000
144000000 - 206000000
206000000 - 248000000

paleozoic

248000000 - 290000000
290000000 - 354000000
354000000 - 417000000
417000000 - 443000000
443000000 - 490000000
490000000 - 543000000

precambrian

543000000 - 2500000000
2500000000 - 3800000000