Geologic Timeline

Precambrian Time

4,560,000,000 BC - 542,000,000 BC

Paleozoic Era

542,000,000 BC - 488,000,000 BC
488,000,000 BC - 444,000,000 BC
444,000,000 BC - 416,000,000 BC
416,000,000 BC - 359,000,000 BC
359,000,000 BC - 299,000,000 BC
299,000,000 BC - 251,000,000 BC

Mesozoic Era

251,000,000 BC - 200,000,000 BC
200,000,000 BC - 145,000,000 BC
145,000,000 BC - 65,000,000 BC

Cenozoic Era

65,000,000 BC - 18,000,000 BC
18,000,000 BC - Present