Geologic Time Frame Information

kya = thousands of years before present - Mya = millions of years before present


Geologic Eras

Earth's chronological dating
# Era Time Frame
1 Cenozoic 66 million years ago to 2017
2 Mesozoic 252.17 to 66 million years ago
3 Paleozoic 541 to 252.17 million years ago
4 Neoproterozoic 1,000 to 541 million years ago
5 Mesoproterozoic 1,600 to 1,000 million years ago
6 Paleoproterozoic 2,500 to 1,600 million years ago
7 Neoarchean 2,800 to 2,500 million years ago
8 Mesoarchean 3,200 to 2,800 million years ago
9 Paleoarchean 3,600 to 3,200 million years ago
10 Eoarchean 4,000 to 3,600 million years ago
11 Hadean Eon Formation of Earth to 4,000 million years ago

Cenozoic Era

Age of Mammals
Three Periods Broken into Eight Epochs
Periods Epochs Time Frame
Quaternary Anthropocene Present -1950 CE
Quaternary Holocene 1950 CE - 11.784 kya
Quaternary Pleistocene 11.784 kya - 2.588 Mya
Neogene Pliocene 2.588 Mya - 5.333 Mya
Neogene Miocene 5.333 Mya - 23.03 Mya
Paleogene Oligocene 23.03 Mya - 33.9 Mya
Paleogene Eocene 33.9 Mya - 56.0 Mya
Paleogene Paleocene 56.0 Mya - 66.0 Mya