Era
Quaternary
1,827
Cretaceous
1,654
Precambrian
1,240
Paleozoic
1,176
Tertiary
1,129
Devonian
811
From 2 million years ago
810
Pleistocene
740
Cenozoic
695
Jurassic
685
Mesozoic
595
Ordovician
594
Permian
580
Carboniferous
554
From 65 to 140 million years ago
549
From 570 million to 5 billion years ago
505
Pennsylvanian
474
Cambrian
436
Triassic
435
Silurian
427
From 230 to 570 million years ago
393
From 2 to 65 million years ago
383
19th century
364
Mississippian
363
Eocene
356
Miocene
332
From 10 thousand to 2 million years ago
320
From 345 to 405 million years ago
294
From 65 million years ago
275
Proterozoic
253
From 140 to 190 million years ago
245
Pliocene
242
From 65 to 230 million years ago
220
Holocene
214
From 280 to 345 million years ago
212
Neogene
199
From 425 to 500 million years ago
190
Archaean
176
From 230 to 280 million years ago
165
Oligocene
137
From 190 to 230 million years ago
135
From 280 to 310 million years ago
133
Paleocene
132
From 405 to 425 million years ago
127
From 2 to 140 million years ago
122
From 40 to 55 million years ago
121
20th century
115
From 310 to 345 million years ago
115
From 500 to 570 million years ago
111
From 2 to 25 million years ago
104
more ...