Prehistoric Time Periods

 

MYA1 Harland at al. 1990
MYA2 Gradstein et al. 1995
MYA3 Gradstein et al 2004 ICS (International Commission on Stratigraphy)

 

SUB-PERIOD AGE

MYA1

MYA2

ERROR MYA3 ERROR
Triassic Late Carnian 235 223.4 227 220.7 4.4 228-216.5 2.0
  Norian 223.4 209.5 220.7 209.6 4.1 216.5-203.6 2.0
  Rhaetian 209.5 208 209.6 205.7 4.0 203.6-199.6 1.5
Jurassic Early Hettangian 208 203.5 205.7 201.9 3.9 199.6-196.5 0.6
  Sinemurian 203.5 194.5 201.9 195.3 3.9 196.5-189.6 1.0
  Pliensbachian 194.5 187 195.3 189.6 4.0 189.6-183 1.5
  Toarcian 187 178 189.6 180.1 4.0 183-175.6 1.5
Jurassic Middle Aalenian 178 173.5 180.1 176.5 4.0 175.6-171.6 2.0
  Bajocian 173.5 166.1 176.5 169.2 4.0 171.6-167.7 3.0
  Bathonian 166.1 161.3 169.2 164.4 3.8 167.7-164.7 3.5
  Callovian 161.3 157.1 164.4 159.4 3.6 164.7-161.2 4.0
Jurassic Late Oxfordian 157.1 154.7 159.4 154.1 3.2 161.2-155 4.0
  Kimmeridgian 154.7 152.1 154.1 150.7 3.0 155-150.8 4.0
  Tithonian 152.1 145.6 150.7 144.2 2.6 150.8-145.5 4.0
Cretaceous Early Berriasian 145.6 140.7 144.2 137.0 2.2 145.5-140.2 4.0
  Valanginian 140.7 135 137.0 132.0 1.9 140.2-136.4 3.0
  Hauterivian 135 131.8 132.0 127.0 1.6 136.4-130 2.0
  Barremian 131.8 124.5 127.0 121.0 1.4 130-125 1.5
  Aptian 124.5 112 121.0 112.2 1.1 125-112 1.0
  Albian 112 97 112.2 98.9 0.6 112-99.6 1.0
Cretaceous Late Cenomanian 97 90.4 98.9 93.5 0.2 99.6-93.5 0.9
  Turonian 90.4 88.5 93.5 89.9 0.5 93.5-89.3 0.8
  Coniacian 88.5 86.6 89.9 85.8 0.5 89.3-85.5 1.0
  Santonian 86.6 83 85.8 83.5 0.5 85.5-83.5 0.7
  Campanian 83 74 83.5 71.0 0.5 83.5-70.6 0.7
  Maastrichtian 74 65 71.0 65.0 0.1 70.6-65.5 0.6 - 0.3



All contents of www.AgeOfDinosaurs.com are Copyrighted