Phanerozoic Eon - 544 million years ago to present

Cenozoic Era - 65 million years ago to present

Quaternary Period - 1.8 million years ago to present

Holocene Epoch - 8,000 years ago to present

Pleistocene Epoch - 1.8 million to 8,000 years ago

Tertiary Period - 65 to 1.8 million years ago

Pliocene Epoch - 5.3 to 1.8 million years ago

Miocene Epoch - 23.8 to 5.3 million years ago

Oligocene Epoch - 33.7 to 23.8 million years ago

Eocene Epoch - 55.5 to 33.7 million years ago

Paleocene Epoch - 65 to 55.5 million years ago

 

Mesozoic Era - 248 to 65 million years ago

Cretaceous Period - 145 to 65 million years ago

Jurassic Period - 213 to 145 million years ago

Triassic Period - 248 to 213 million years ago

 

Paleozoic Era - 544 to 248 million years ago

Permian Period - 286 to 248 million years ago

Carboniferous Period - 360 to 286 million years ago

Pennsylvanian Period - 325 to 286 million years ago

Mississippian Period - 360 to 325 million years ago

Devonian Period - 410 to 360 million years ago

Silurian Period - 440 to 410 million years ago

Ordovician Period - 505 to 440 million years ago

Cambrian Period - 544 to 505 million years ago

 

Precambrian Eon - 4,500 to 544 million years ago

Proterozoic Era - 2,500 to 544 million years ago

Vendian Period - 544 to 650 million years ago

 

Archaean Era - 3,800 to 2,500 million years ago