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Time Periods
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TS1 Harland at al. 1990
TS2 Gradstein et al. 1995
TS3 Gradstein et al 2004 ICS
TS4 Walker et al 2009 SUB-PERIOD | AGE | TS1 | TS2 | ERROR | TS3 | ERROR | TS4 | Triassic Late | Carnian | 235 223.4 | 227 220.7 | 4.4 | 228-216.5 | 2.0 | 235-228 | | Norian | 223.4 209.5 | 220.7 209.6 | 4.1 | 216.5-203.6 | 2.0 | 228-204 | | Rhaetian | 209.5 208 | 209.6 205.7 | 4.0 | 203.6-199.6 | 1.5 | 204-201.6 | Jurassic Early | Hettangian | 208 203.5 | 205.7 201.9 | 3.9 | 199.6-196.5 | 0.6 | 201.6-197 | | Sinemurian | 203.5 194.5 | 201.9 195.3 | 3.9 | 196.5-189.6 | 1.0 | 197-190 | | Pliensbachian | 194.5 187 | 195.3 189.6 | 4.0 | 189.6-183 | 1.5 | 190-183 | | Toarcian | 187 178 | 189.6 180.1 | 4.0 | 183-175.6 | 1.5 | 183-176 | Jurassic Middle | Aalenian | 178 173.5 | 180.1 176.5 | 4.0 | 175.6-171.6 | 2.0 | 176-172 | | Bajocian | 173.5 166.1 | 176.5 169.2 | 4.0 | 171.6-167.7 | 3.0 | 172-168 | | Bathonian | 166.1 161.3 | 169.2 164.4 | 3.8 | 167.7-164.7 | 3.5 | 168-165 | | Callovian | 161.3 157.1 | 164.4 159.4 | 3.6 | 164.7-161.2 | 4.0 | 165-161 | Jurassic Late | Oxfordian | 157.1 154.7 | 159.4 154.1 | 3.2 | 161.2-155 | 4.0 | 161-156 | | Kimmeridgian | 154.7 152.1 | 154.1 150.7 | 3.0 | 155-150.8 | 4.0 | 156-151 | | Tithonian | 152.1 145.6 | 150.7 144.2 | 2.6 | 150.8-145.5 | 4.0 | 151-145.5 | Cretaceous Early | Berriasian | 145.6 140.7 | 144.2 137.0 | 2.2 | 145.5-140.2 | 4.0 | 145.5-140 | | Valanginian | 140.7 135 | 137.0 132.0 | 1.9 | 140.2-136.4 | 3.0 | 140-136 | | Hauterivian | 135 131.8 | 132.0 127.0 | 1.6 | 136.4-130 | 2.0 | 136-130 | | Barremian | 131.8 124.5 | 127.0 121.0 | 1.4 | 130-125 | 1.5 | 130-125 | | Aptian | 124.5 112 | 121.0 112.2 | 1.1 | 125-112 | 1.0 | 125-112 | | Albian | 112 97 | 112.2 98.9 | 0.6 | 112-99.6 | 1.0 | 112-99.6 | Cretaceous Late | Cenomanian | 97 90.4 | 98.9 93.5 | 0.2 | 99.6-93.5 | 0.9 | 99.6-93.5 | | Turonian | 90.4 88.5 | 93.5 89.9 | 0.5 | 93.5-89.3 | 0.8 | 93.5-89.3 | | Coniacian | 88.5 86.6 | 89.9 85.8 | 0.5 | 89.3-85.5 | 1.0 | 89.3-85.5 | | Santonian | 86.6 83 | 85.8 83.5 | 0.5 | 85.5-83.5 | 0.7 | 85.5-83.5 | | Campanian | 83 74 | 83.5 71.0 | 0.5 | 83.5-70.6 | 0.7 | 83.5-70.6 | | Maastrichtian | 74 65 | 71.0 65.0 | 0.1 | 70.6-65.5 | 0.6 - 0.3 | 70.6-65.5 |
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