| European Age | American Age | Era | Period | Epoch | Age / Stage | From | (G) Geologic | To (MYA) | (G) Geologic | Duration | (D) Geologic | From (Years) | (H) Human | To (Years) | (H) Human |
| 1 40 | 1 40 | 8 | 0 | H000000000 | 40 | H000000010 | |||||||||
| 2 80 | 2 80 | 40 | H000000010 | 80 | H000000020 | ||||||||||
| 3 120 | 3 120 | 80 | H000000020 | 120 | H000000030 | ||||||||||
| 4 160 | 4 160 | 120 | H000000030 | 160 | H000000040 | ||||||||||
| 5 200 | 5 200 | 160 | H000000040 | 200 | H000000050 | ||||||||||
| 6 240 | 6 240 | 200 | H000000050 | 240 | H000000060 | ||||||||||
| 7 280 | 7 280 | 240 | H000000060 | 280 | H000000070 | ||||||||||
| 8 320 (40 second blocks) | 8 320 (40 second blocks) | 280 | H000000070 | 320 | H000000090 | ||||||||||
| 1 5 | 1 5 | 7 | 0 | H000000000 | 5 | H000000100 | |||||||||
| 2 10 | 2 10 | 5 | H000000100 | 10 | H000000200 | ||||||||||
| 3 15 | 3 15 | 10 | H000000200 | 15 | H000000300 | ||||||||||
| 4 20 | 4 20 | 15 | H000000300 | 20 | H000000400 | ||||||||||
| 5 25 | 5 25 | 20 | H000000400 | 25 | H000000500 | ||||||||||
| 6 30 | 6 30 | 25 | H000000500 | 30 | H000000600 | ||||||||||
| 7 35 | 7 35 | 30 | H000000600 | 35 | H000000700 | ||||||||||
| 8 40 (5 minute blocks) | 8 40 (5 minute blocks) | 35 | H000000700 | 40 | H000000800 | ||||||||||
| 1 40 | 1 40 | 6 | 0 | H000000000 | 40 | H000001000 | |||||||||
| 2 80 | 2 80 | 40 | H000001000 | 80 | H000002000 | ||||||||||
| 3 120 | 3 120 | 80 | H000002000 | 120 | H000003000 | ||||||||||
| 4 160 | 4 160 | 120 | H000003000 | 160 | H000004000 | ||||||||||
| 5 200 | 5 200 | 160 | H000004000 | 200 | H000005000 | ||||||||||
| 6 240 | 6 240 | 200 | H000005000 | 240 | H000006000 | ||||||||||
| 7 280 | 7 280 | 240 | H000006000 | 280 | H000007000 | ||||||||||
| 8 320 (40 minute blocks) | 8 320 (40 minute blocks) | 280 | H000007000 | 320 | H000008000 | ||||||||||
| 1 4.5 | 1 4.5 | 5 | 0 | H000000000 | 4.5 | H000010000 | |||||||||
| 2 9.0 | 2 9.0 | 4.5 | H000010000 | 9 | H000020000 | ||||||||||
| 3 13.5 | 3 13.5 | 9 | H000020000 | 13.5 | H000030000 | ||||||||||
| 4 18.0 | 4 18.0 | 13.5 | H000030000 | 18 | H000040000 | ||||||||||
| 5 22.5 | 5 22.5 | 18 | H000040000 | 22.5 | H000050000 | ||||||||||
| 6 27.0 | 6 27.0 | 22.5 | H000050000 | 27 | H000060000 | ||||||||||
| 7 32.5 | 7 32.5 | 27 | H000060000 | 32.5 | H000070000 | ||||||||||
| 8 36.0 (4.5 hour blocks) | 8 36.0 (4.5 hour blocks) | 32.5 | H000070000 | 36 | H000080000 | ||||||||||
| 1 1.5 | 1 1.5 | 4 | 0 | H000000000 | 1.5 | H000100000 | |||||||||
| 2 3.0 | 2 3.0 | 1.5 | H000100000 | 3 | H000200000 | ||||||||||
| 3 4.5 | 3 4.5 | 3 | H000200000 | 4.5 | H000300000 | ||||||||||
| 4 6.0 | 4 6.0 | 4.5 | H000300000 | 6 | H000400000 | ||||||||||
| 5 7.5 | 5 7.5 | 6 | H000400000 | 7.5 | H000500000 | ||||||||||
| 6 9.0 | 6 9.0 | 7.5 | H000500000 | 9 | H000600000 | ||||||||||
| 7 10.5 | 7 10.5 | 9 | H000600000 | 10.5 | H000700000 | ||||||||||
| 8 12 (1.5 day blocks) | 8 12 (1.5 day blocks) | 10.5 | H000700000 | 12 | H000800000 | ||||||||||
| 1 12 | 1 12 | 3 | 0 | H000000000 | 12 | H001000000 | |||||||||
| 2 24 | 2 24 | 12 | H001000000 | 24 | H002000000 | ||||||||||
| 3 36 | 3 36 | 24 | H002000000 | 36 | H003000000 | ||||||||||
| 4 48 | 4 48 | 36 | H003000000 | 48 | H004000000 | ||||||||||
| 5 60 | 5 60 | 48 | H004000000 | 60 | H005000000 | ||||||||||
| 6 72 | 6 72 | 60 | H005000000 | 72 | H006000000 | ||||||||||
| 7 84 | 7 84 | 72 | H006000000 | 84 | H007000000 | ||||||||||
| 8 96 (12 day blocks) | 8 96 (12 day blocks) | 96 | H007000000 | 96 | H008000000 | ||||||||||
| 1 3 | 1 3 | 2 | 0 | H000000000 | 3 | H010000000 | |||||||||
| 2 6 | 2 6 | 3 | H010000000 | 6 | H020000000 | ||||||||||
| 3 9 | 3 9 | 6 | H020000000 | 9 | H030000000 | ||||||||||
| 4 12 | 4 12 | 9 | H030000000 | 12 | H040000000 | ||||||||||
| 5 15 | 5 15 | 12 | H040000000 | 15 | H050000000 | ||||||||||
| 6 18 | 6 18 | 15 | H050000000 | 18 | H060000000 | ||||||||||
| 7 21 | 7 21 | 18 | H060000000 | 21 | H070000000 | ||||||||||
| 8 24 (3 month blocks) | 8 24 (3 month blocks) | 21 | H070000000 | 24 | H080000000 | ||||||||||
| 1 2 | 1 2 | 1 | 0 | H000000000 | 2 | H100000000 | |||||||||
| 2 4 | 2 4 | 2 | H100000000 | 4 | H200000000 | ||||||||||
| 3 6 | 3 6 | 4 | H200000000 | 6 | H300000000 | ||||||||||
| 4 8 | 4 8 | 6 | H300000000 | 8 | H400000000 | ||||||||||
| 5 10 | 5 10 | 8 | H400000000 | 10 | H500000000 | ||||||||||
| 6 12 | 6 12 | 10 | H500000000 | 12 | H600000000 | ||||||||||
| 7 14 | 7 14 | 12 | H600000000 | 14 | H700000000 | ||||||||||
| 8 16 (2 year blocks) | 8 16 (2 year blocks) | 14 | H700000000 | 16 | H800000000 | ||||||||||
| 1 3 | 1 3 | 6 | 0 | I000000 | 3 | I000001 | |||||||||
| 2 6 | 2 6 | 3 | I000001 | 6 | I000002 | ||||||||||
| 3 9 | 3 9 | 6 | I000002 | 9 | I000003 | ||||||||||
| 4 12 | 4 12 | 9 | I000003 | 12 | I000004 | ||||||||||
| 5 15 | 5 15 | 12 | I000004 | 15 | I000005 | ||||||||||
| 6 18 | 6 18 | 15 | I000005 | 18 | I000006 | ||||||||||
| 7 21 | 7 21 | 18 | I000006 | 21 | I000007 | ||||||||||
| 8 24 | 8 24 | 21 | I000007 | 24 | I000008 | ||||||||||
| 9 27 (3 year blocks) | 9 27 (3 year blocks) | 24 | I000008 | 27 | I000009 | ||||||||||
| 9 Middle East Wars | 9 Middle East Wars | 5 | 1991 | I000080 | 2018 | I000090 | |||||||||
| 8 Far East Wars | 8 Far East Wars | 1964 | I000070 | 1991 | I000080 | ||||||||||
| 7 World War II | 7 World War II | 1937 | I000060 | 1964 | I000070 | ||||||||||
| 6 World War I | 6 World War I | 1910 | I000050 | 1937 | I000060 | ||||||||||
| 5 Spanish American War | 5 Spanish American War | 1883 | I000040 | 1910 | I000050 | ||||||||||
| 4 Civil War | 4 Civil War | 1856 | I000030 | 1883 | I000040 | ||||||||||
| 3 Mormon War | 3 Mormon War | 1829 | I000020 | 1856 | I000030 | ||||||||||
| 2 Napoleonic Wars | 2 Napoleonic Wars | 1802 | I000010 | 1829 | I000020 | ||||||||||
| 1 Independence Wars (27 year blocks) | 1 Independence Wars (27 year blocks) | 1775 | I000000 | 1802 | I000010 | ||||||||||
| 1 16 | 1 16 | 4 | 0 | I000000 | 16 | I000100 | |||||||||
| 2 32 | 2 32 | 16 | I000100 | 32 | I000200 | ||||||||||
| 3 48 | 3 48 | 32 | I000200 | 48 | I000300 | ||||||||||
| 4 64 | 4 64 | 48 | I000300 | 64 | I000400 | ||||||||||
| 5 80 | 5 80 | 64 | I000400 | 80 | I000500 | ||||||||||
| 6 96 | 6 96 | 80 | I000500 | 96 | I000600 | ||||||||||
| 7 112 | 7 112 | 96 | I000600 | 112 | I000700 | ||||||||||
| 8 128 | 8 128 | 112 | I000700 | 128 | I000800 | ||||||||||
| 9 144 (16 year blocks) | 9 144 (16 year blocks) | 128 | I000800 | 144 | I000900 | ||||||||||
| 8 Information Age | 8 Information Age | 3 | 2008 | I008000 | 2152 | I009000 | |||||||||
| 7 Industrial Age | 7 Industrial Age | 1864 | I007000 | 2008 | I008000 | ||||||||||
| 6 Independace | 6 Independace | 1720 | I006000 | 1864 | I007000 | ||||||||||
| 5Colonialism | 5Colonialism | 1576 | I005000 | 1720 | I006000 | ||||||||||
| 4 Renaissance | 4 Renaissance | 1432 | I004000 | 1576 | I005000 | ||||||||||
| 3 Age of Kings | 3 Age of Kings | 1288 | I003000 | 1432 | I004000 | ||||||||||
| 2 Dark Ages | 2 Dark Ages | 1144 | I002000 | 1288 | I003000 | ||||||||||
| 1 Viking Age (144 year blocks) | 1 Viking Age (144 year blocks) | 1000 | I001000 | 1144 | I002000 | ||||||||||
| 1 lifetime 125 | 1 lifetime 125 | 2 | 0 | G000000000 | 125 | G000000001 | 0.0125 | D000000001 | 0 | I000000 | 125 | I010000 | |||
| 2 lifetimes 250 | 2 lifetimes 250 | 125 | G000000001 | 250 | G000000002 | 0.0125 | D000000001 | 125 | I010000 | 250 | I020000 | ||||
| 3 lifetimes 375 | 3 lifetimes 375 | 250 | G000000002 | 375 | G000000003 | 0.0125 | D000000001 | 250 | I020000 | 375 | I030000 | ||||
| 4 lifetimes 500 | 4 lifetimes 500 | 375 | G000000003 | 500 | G000000004 | 0.0125 | D000000001 | 375 | I030000 | 500 | I040000 | ||||
| 5 lifetimes 625 | 5 lifetimes 625 | 500 | G000000004 | 625 | G000000005 | 0.0125 | D000000001 | 500 | I040000 | 625 | I050000 | ||||
| 6 lifetimes 750 | 6 lifetimes 750 | 625 | G000000005 | 750 | G000000006 | 0.0125 | D000000001 | 625 | I050000 | 750 | I060000 | ||||
| 7 lifteimes 875 | 7 lifteimes 875 | 750 | G000000006 | 875 | G000000007 | 0.0125 | D000000001 | 750 | I060000 | 875 | I070000 | ||||
| 8 lifetimes 1000 (125 year blocks) | 8 lifetimes 1000 (125 year blocks) | 875 | G000000007 | 1000 | G000000008 | 0.0125 | D000000001 | 875 | I070000 | 1000 | I080000 | ||||
| 8th Millenium | 8th Millenium | 1 | 3125 AD | G000000031 | 4000 AD | G000000040 | 0.1 | D00000010 | 3125 AD | I310000 | 4000 AD | I400000 | |||
| 7th Millenium | 7th Millenium | 2125 AD | G000000021 | 3000 AD | G000000030 | 0.1 | D00000010 | 2125 AD | I210000 | 3000 AD | I300000 | ||||
| 6th Millenium | 6th Millenium | 1125 AD | G000000011 | 2000 AD | G000000020 | 0.1 | D00000010 | 1125 AD | I110000 | 2000 AD | I200000 | ||||
| 5th Millenium | 5th Millenium | 0 AD | G000000000 | 1000 AD | G000000010 | 0.1 | D00000010 | 0 AD | nI000000 | 1000 AD | I100000 | ||||
| 4th Millenium | 4th Millenium | 1000 BC | nG000000010 | 125 BC | nG000000001 | 0.1 | D00000010 | 1000 BC | nI100000 | 125 BC | nI010000 | ||||
| 3rd Millenium | 3rd Millenium | 2000 BC | nG000000020 | 1125 BC | nG000000011 | 0.1 | D00000010 | 2000 BC | nI200000 | 1125 BC | nI110000 | ||||
| 2nd Millenium | 2nd Millenium | 3000 BC | nG000000030 | 2125 BC | nG000000021 | 0.1 | D00000010 | 3000 BC | nI300000 | 2125 BC | nI210000 | ||||
| 1st Millenium (1000 year blocks) | 1st Millenium (1000 year blocks) | 4000 BC | nG000000040 | 3125 BC | nG000000031 | 0.1 | D00000010 | 4000 BC | nI400000 | 3125 BC | nI310000 | ||||
| European Age | American Age | Era | Period | Epoch | Age / Stage | From | (G) Geologic | To (MYA) | (G) Geologic | Duration | (D) Geologic | From (Years) | (H) Human | To (Years) | (H) Human |
| Holocene | Quarternary | Cenozoic | Quaternary | Quaternary | Holocene | 0.000 | G000000000 | 1.000 | G000020000 | 1.000 | D000020000 | ||||
| Gelasian | Quarternary | Cenozoic | Quaternary | Pliestocene | Gelasian | 1.000 | G000020000 | 2.590 | G000051320 | 1.590 | D000031320 | ||||
| Piacenzian | Pliocene | Cenozoic | Neogene | Pliocene | Piacenzian | 2.590 | G000051320 | 3.000 | G000060000 | 0.410 | D000006320 | ||||
| Zanclian | Pliocene | Cenozoic | Neogene | Pliocene | Zanclian | 3.000 | G000060000 | 5.330 | G0001251500 | 2.330 | D000055120 | ||||
| Mesinian | Upper Miocene | Cenozoic | Neogene | Late Miocene | Mesinian | 7.250 | G0001251500 | 8.000 | G000200000 | 0.750 | D000050310 | ||||
| Tortonian | Upper Miocene | Cenozoic | Neogene | Late Miocene | Tortonian | 8.000 | G000200000 | 11.630 | G000260000 | 3.630 | D000073100 | ||||
| Serravallian | Middle Miocene | Cenozoic | Neogene | Middle Miocene | Serravallian | 11.630 | G000260000 | 13.820 | G000325000 | 2.190 | D000042760 | ||||
| Langhian | Middle Miocene | Cenozoic | Neogene | Middle Miocene | Langhian | 13.820 | G000325000 | 15.970 | G000377260 | 2.150 | D000042260 | ||||
| Burdigalian | Lower Miocene | Cenozoic | Neogene | Early Miocene | Burdigalian | 15.970 | G000377260 | 20.440 | G000506700 | 4.470 | D000107260 | ||||
| Aquitanian | Lower Miocene | Cenozoic | Neogene | Early Miocene | Aquitanian | 20.440 | G000506700 | 23.030 | G000560360 | 2.590 | D000051320 | ||||
| Chattian | Oligocene | Cenozoic | Paleogene | Late Oligocene | Chattian | 23.030 | G000560360 | 28.100 | G000720000 | 5.070 | D000121060 | ||||
| Repelian | Oligocene | Cenozoic | Paleogene | Early Oligocene | Rupelian | 28.100 | G000720000 | 33.900 | G000836200 | 5.800 | D000134540 | ||||
| Priabonian | Oligocene | Cenozoic | Paleogene | Late Eocene | Priabonian | 33.900 | G000836200 | 37.800 | G001134540 | 3.900 | D000076200 | ||||
| Bartonian | Eocene | Cenozoic | Paleogene | Middle Eocene | Bartonian | 37.800 | G001134540 | 41.200 | G001223100 | 3.400 | D000066200 | ||||
| Lutetian | Eocene | Cenozoic | Paleogene | Middle Eocene | Lutetian | 41.200 | G001223100 | 47.800 | G001377640 | 6.600 | D000151440 | ||||
| Ypresian | Eocene | Cenozoic | Paleogene | Early Eocene | Ypresian | 47.800 | G001377640 | 56.000 | G001600000 | 8.200 | D000203100 | ||||
| Thanetian | Paleocene | Cenozoic | Paleogene | Late Paleocene | Thanetian | 56.000 | G001600000 | 59.200 | G001671440 | 3.200 | D000063100 | ||||
| Selandian | Paleocene | Cenozoic | Paleogene | Middle Paleocene | Selandian | 59.200 | G001671440 | 61.600 | G001731440 | 2.400 | D000046200 | ||||
| Danian | Paleocene | Cenozoic | Paleogene | Early Paleocene | Danian | 61.600 | G001731440 | 66.000 | G002100000 | 4.400 | D000106200 | ||||
| Maastrichtian | Upper Cretaceous | Mesozoic | Cretaceous | Late | Maastrichtian | 66.000 | G002100000 | 72.100 | G002201440 | 6.100 | D000141440 | ||||
| Campanian | Upper Cretaceous | Mesozoic | Cretaceous | Late | Campanian | 72.100 | G002201440 | 83.600 | G002471440 | 11.500 | D000270000 | ||||
| Santonian | Upper Cretaceous | Mesozoic | Cretaceous | Late | Santonian | 83.600 | G002471440 | 86.300 | G002524540 | 2.700 | D000053100 | ||||
| Coniacian | Upper Cretaceous | Mesozoic | Cretaceous | Late | Coniacian | 86.300 | G002524540 | 89.800 | G002634540 | 3.500 | D000070000 | ||||
| Tronian | Upper Cretaceous | Mesozoic | Cretaceous | Late | Tronian | 89.800 | G002634540 | 93.900 | G002736200 | 4.100 | D000101440 | ||||
| Cenomanian | Upper Cretaceous | Mesozoic | Cretaceous | Late | Cenomanian | 93.900 | G002736200 | 100.500 | G003110000 | 6.600 | D000151440 | ||||
| Albian | Lower Cretaceous | Mesozoic | Cretaceous | Early | Albian | 100.500 | G003110000 | 113.000 | G003420000 | 12.500 | D000310000 | ||||
| Aptian | Lower Cretaceous | Mesozoic | Cretaceous | Early | Aptian | 113.000 | G003420000 | 126.300 | G003744540 | 13.300 | D000324540 | ||||
| Barremian | Lower Cretaceous | Mesozoic | Cretaceous | Early | Barremian | 126.300 | G003744540 | 130.800 | G004054540 | 4.500 | D000110000 | ||||
| Hauterivian | Lower Cretaceous | Mesozoic | Cretaceous | Early | Hauterivian | 130.800 | G004054540 | 133.900 | G004136200 | 3.100 | D000061440 | ||||
| Valanginian | Lower Cretaceous | Mesozoic | Cretaceous | Early | Valanginian | 133.900 | G004136200 | 139.400 | G004266200 | 5.500 | D000130000 | ||||
| Berriassian | Lower Cretaceous | Mesozoic | Cretaceous | Early | Berriassian | 139.400 | G004266200 | 145.000 | G004420000 | 5.600 | D000131440 | ||||
| Tithonian | Upper Jurassic | Mesozoic | Jurassic | Late | Tithonian | 145.000 | G004420000 | 152.100 | G004601540 | 7.100 | D000161440 | ||||
| Kimmeridgian | Upper Jurassic | Mesozoic | Jurassic | Late | Kimmeridgian | 152.100 | G004601540 | 157.300 | G004724540 | 5.200 | D000123100 | ||||
| Oxfordian | Upper Jurassic | Mesozoic | Jurassic | Late | Oxfordian | 157.300 | G004724540 | 163.500 | G005060000 | 6.200 | D000143100 | ||||
| Callovian | Middle Jurassic | Mesozoic | Jurassic | Middle | Callovian | 163.500 | G005060000 | 166.100 | G005141540 | 2.600 | D000051440 | ||||
| Bathonian | Middle Jurassic | Mesozoic | Jurassic | Middle | Bathonian | 166.100 | G005141540 | 168.300 | G005204540 | 2.200 | D000043100 | ||||
| Bajocian | Middle Jurassic | Mesozoic | Jurassic | Middle | Bajocian | 168.300 | G005204540 | 170.300 | G005244540 | 2.000 | D000040000 | ||||
| Aalentian | Middle Jurassic | Mesozoic | Jurassic | Middle | Aalentian | 170.300 | G005244540 | 174.100 | G005341440 | 3.800 | D000074540 | ||||
| Toarcian | Lower Jurassic | Mesozoic | Jurassic | Early | Toarcian | 174.100 | G005341440 | 182.700 | G005553100 | 8.600 | D000211440 | ||||
| Pliensbachian | Lower Jurassic | Mesozoic | Jurassic | Early | Pliensbachian | 182.700 | G005553100 | 190.800 | G005754540 | 8.100 | D000201440 | ||||
| Sinemurian | Lower Jurassic | Mesozoic | Jurassic | Early | Sinemurian | 190.800 | G005754540 | 199.300 | G006164540 | 8.500 | D000210000 | ||||
| Hettangian | Lower Jurassic | Mesozoic | Jurassic | Early | Hettangian | 199.300 | G006164540 | 201.300 | G006224540 | 2.000 | D000040000 | ||||
| Rhaetian | Upper Triassic | Mesozoic | Triassic | Late | Rhaetian | 201.300 | G006224540 | 209.500 | G006430000 | 8.200 | D000203100 | ||||
| Norian | Upper Triassic | Mesozoic | Triassic | Late | Norian | 209.500 | G006430000 | 228.400 | G007106200 | 18.900 | D000456200 | ||||
| Carnian | Upper Triassic | Mesozoic | Triassic | Late | Carnian | 228.400 | G007106200 | 237.000 | G007320000 | 8.600 | D000211440 | ||||
| Ladinian | Middle Triassic | Mesozoic | Triassic | Middle | Ladinian | 237.000 | G007320000 | 241.500 | G007430000 | 4.500 | D000110000 | ||||
| Anisian | Middle Triassic | Mesozoic | Triassic | Middle | Anisian | 241.500 | G007430000 | 247.100 | G007541440 | 5.600 | D000141440 | ||||
| Scythian | Lower Triassic | Mesozoic | Triassic | Early | Olenekian | 247.100 | G007541440 | 250.000 | G007640000 | 2.900 | D000056200 | ||||
| Scythian | Lower Triassic | Mesozoic | Triassic | Early | Induan | 250.000 | G007640000 | 252.200 | G007703100 | 2.200 | D000043100 | ||||
| Upper Permian | Upper Permian | Paleozoic | Permian | Lopigian | Changhsingian | 252.200 | G007703100 | 254.200 | G010103100 | 2.000 | D000040000 | ||||
| Upper Permian | Upper Permian | Paleozoic | Permian | Lopigian | Wuchiapingian | 254.200 | G010103100 | 259.800 | G010234540 | 5.600 | D000131440 | ||||
| Upper Permian | Upper Permian | Paleozoic | Permian | Guadalupian | Capitanian | 259.800 | G010234540 | 265.100 | G010351440 | 5.300 | D000124540 | ||||
| Upper Permian | Upper Permian | Paleozoic | Permian | Guadalupian | Wordian / Roadian | 265.100 | G010351440 | 272.300 | G010504540 | 7.200 | D000163100 | ||||
| Lower Permian | Lower Permian | Paleozoic | Permian | Cisuralian | Kungurian | 272.300 | G010504540 | 279.300 | G010724540 | 7.000 | D000160000 | ||||
| Lower Permian | Lower Permian | Paleozoic | Permian | Cisuralian | Artinskian | 279.300 | G010724540 | 290.100 | G011201440 | 10.800 | D000254540 | ||||
| Lower Permian | Lower Permian | Paleozoic | Permian | Cisuralian | Sakmarian | 290.100 | G011201440 | 295.500 | G011330000 | 5.400 | D000126200 | ||||
| Lower Permian | Lower Permian | Paleozoic | Permian | Cisuralian | Asselian | 295.500 | G011330000 | 298.900 | G011416200 | 3.400 | D000306200 | ||||
| Pennsylvanian | Pennsylvanian | Paleozoic | Carboniferous | Pennsylvanian Late | Late - Gzhelian | 298.900 | G011416200 | 303.700 | G011530000 | 4.800 | D000114540 | ||||
| Pennsylvanian | Pennsylvanian | Paleozoic | Carboniferous | Pennsylvanian Late | Late - Kasimovian | 303.700 | G011530000 | 307.000 | G011620000 | 3.300 | D000064540 | ||||
| Pennsylvanian | Pennsylvanian | Paleozoic | Carboniferous | Pennsylvanian Middle | Middle - Moscovian | 307.000 | G011620000 | 315.200 | G012013100 | 8.200 | D000203100 | ||||
| Pennsylvanian | Pennsylvanian | Paleozoic | Carboniferous | Pennsylvanian Early | Early - Bashkirian | 315.200 | G012013100 | 323.200 | G012023100 | 8.000 | D000200000 | ||||
| Mississippian | Mississippian | Paleozoic | Carboniferous | Mississippian Late | Late - Serpukhovian | 323.200 | G012023100 | 330.900 | G012416200 | 7.700 | D000173100 | ||||
| Mississippian | Mississippian | Paleozoic | Carboniferous | Mississippian Middle | Middle - Visean | 330.900 | G012416200 | 346.700 | G013013100 | 15.800 | D000373100 | ||||
| Mississippian | Mississippian | Paleozoic | Carboniferous | Mississippian Early | Early - Tournaisian | 346.700 | G013013100 | 358.900 | G013316200 | 12.200 | D000303100 | ||||
| Upper Devonian | Upper Devonian | Paleozoic | Devonian | Late | Famennian | 358.900 | G013316200 | 372.200 | G013703100 | 13.300 | D000324540 | ||||
| Upper Devonian | Upper Devonian | Paleozoic | Devonian | Late | Frasnian | 372.200 | G013703100 | 382.700 | G014113100 | 10.500 | D000250000 | ||||
| Middle Devonian | Middle Devonian | Paleozoic | Devonian | Middle | Givetian | 382.700 | G014113100 | 387.700 | G014213100 | 5.000 | D000120000 | ||||
| Middle Devonian | Middle Devonian | Paleozoic | Devonian | Middle | Eifelian | 387.700 | G014213100 | 393.300 | G014364540 | 5.600 | D000131440 | ||||
| Lower Devonian | Lower Devonian | Paleozoic | Devonian | Early | Emsian | 393.300 | G014364540 | 407.600 | G0144731440 | 14.300 | D000344540 | ||||
| Lower Devonian | Lower Devonian | Paleozoic | Devonian | Early | Pragian | 407.600 | G0144731440 | 410.800 | G015014540 | 3.200 | D000063100 | ||||
| Lower Devonian | Lower Devonian | Paleozoic | Devonian | Early | Lochkovian | 410.800 | G015014540 | 419.200 | G015223100 | 8.400 | D000206200 | ||||
| Upper Silurian | Upper Silurian | Paleozoic | Silurian | Pridoli | Upper | 419.200 | G015223100 | 423.000 | G015310000 | 3.800 | D000074540 | ||||
| Upper Silurian | Upper Silurian | Paleozoic | Silurian | Ludlow | Ludfordian / Gorstian | 423.000 | G015310000 | 427.400 | G015426200 | 4.400 | D000106200 | ||||
| Lower Silurian | Lower Silurian | Paleozoic | Silurian | Wenlock | Homerian / Sheinwoodian | 427.400 | G015426200 | 433.400 | G015566200 | 6.000 | D000140000 | ||||
| Lower Silurian | Lower Silurian | Paleozoic | Silurian | Llandovery | Telychian | 433.400 | G015566200 | 438.500 | G015710000 | 5.100 | D000121440 | ||||
| Lower Silurian | Lower Silurian | Paleozoic | Silurian | Llandovery | Aeronian / Rhuddanian | 438.500 | G015710000 | 443.800 | G016034540 | 5.300 | D000124540 | ||||
| Ordovician | Ordovician | Paleozoic | Ordovician | Late | Himanlian | 443.800 | G016034540 | 445.200 | G016063100 | 1.400 | D000016200 | ||||
| Ordovician | Ordovician | Paleozoic | Ordovician | Late | Katian | 445.200 | G016063100 | 453.000 | G01622000 | 7.800 | D0001745400 | ||||
| Ordovician | Ordovician | Paleozoic | Ordovician | Late | Sandbian | 453.000 | G01622000 | 458.400 | G016406200 | 5.400 | D000126200 | ||||
| Ordovician | Ordovician | Paleozoic | Ordovician | Middle | Darriwilian | 458.400 | G016406200 | 467.000 | G016620000 | 8.600 | D000211440 | ||||
| Ordovician | Ordovician | Paleozoic | Ordovician | Middle | Dapingian | 467.000 | G016620000 | 470.000 | G016700000 | 3.000 | D000060000 | ||||
| Ordovician | Ordovician | Paleozoic | Ordovician | Early | Floian | 470.000 | G016700000 | 477.700 | G017073100 | 7.700 | D000173100 | ||||
| Ordovician | Ordovician | Paleozoic | Ordovician | Early | Tremadocian | 477.700 | G017073100 | 485.400 | G017266200 | 7.700 | D000173100 | ||||
| Cambrian | Cambrian | Paleozoic | Cambrian | Furongian | Age 10 | 485.400 | G017266200 | 489.500 | G017370000 | 4.100 | D000101440 | ||||
| Cambrian | Cambrian | Paleozoic | Cambrian | Furongian | Jiangshanian | 489.500 | G017370000 | 494.000 | G017500000 | 4.500 | D000110000 | ||||
| Cambrian | Cambrian | Paleozoic | Cambrian | Furongian | Paibian | 494.000 | G017500000 | 497.000 | G017560000 | 3.000 | D000060000 | ||||
| Cambrian | Cambrian | Paleozoic | Cambrian | Epoch 3 | Guzhangian | 497.000 | G017560000 | 500.500 | G020010000 | 3.500 | D000070000 | ||||
| Cambrian | Cambrian | Paleozoic | Cambrian | Epoch 3 | Drumian | 500.500 | G020010000 | 504.500 | G020100000 | 4.000 | D000100000 | ||||
| Cambrian | Cambrian | Paleozoic | Cambrian | Epoch 3 | Age 5 | 504.500 | G020100000 | 509.000 | G020220000 | 4.500 | D000110000 | ||||
| Cambrian | Cambrian | Paleozoic | Cambrian | Epoch 2 | Age 4 | 509.000 | G020220000 | 514.000 | G020340000 | 5.000 | D000120000 | ||||
| Cambrian | Cambrian | Paleozoic | Cambrian | Epoch 2 | Age 3 | 514.000 | G020340000 | 521.000 | G020520000 | 7.000 | D000160000 | ||||
| Cambrian | Cambrian | Paleozoic | Cambrian | Terreneuvian | Age2 | 521.000 | G020520000 | 529.000 | G020720000 | 8.000 | D000200000 | ||||
| Cambrian | Cambrian | Paleozoic | Cambrian | Terreneuvian | Fortunian | 529.000 | G020720000 | 541.000 | G021220000 | 12.000 | D000300000 | ||||
| Pre-Cambrian | Pre-Cambrian | Paleozoic | Pre-Cambrian | 541.000 | G021220000 | 600.000 | G023100000 | 59.000 | D001660000 |