Geologic Time Project

Precambrian Time

4,560,000,000 B.C. - 542,000,000 B.C.

Paleozoic Era - Life Diversifies

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 - The Time of Reptiles

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 - Mammals Rise To Prominence

65,000,000 BC - 1,800,000 BC

1,800,000 BC - Present