Mesozoic Subages
The interval definitions in this timescale are derived from the following sources:
- F. M. Gradstein, F. P. Agterberg, J. G. Ogg, J. Hardenbol, P. Van Veen, J. Thierry, and Z. Huang. 1995. A Triassic, Jurassic, and Cretaceous time scale. SEPM Special Publication 54 view
- F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
- J. Palfy, P. L. Smith, and J. K. Mortensen. 2000. A U-Pb and 40Ar/39Ar time scale for the Jurassic. Canadian Journal of Earth Sciences 37(6):923-944 view
There are 10 timescales which overlap this one. show
Interval boundaries marked with * have been interpolated based on the differences between the ages for international timescale boundaries quoted in the source and the currently accepted ages for those boundaries.
Interval names marked with † are no longer in current use.
This timescale is used in the definition of 46988 collections
| International Chronostratigraphic Timescale | Mesozoic Subages | Ammonite Chrons of North America | Ammonite Chrons of Northwest Europe | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Quaternary | Holocene | Meghalayan | 0 | |||||||
| Northgrippian | 0.0042 | |||||||||
| Greenlandian | 0.0082 | |||||||||
| Pleistocene | Late Pleistocene | 0.0117 | ||||||||
| Chibanian | 0.129 | |||||||||
| Calabrian | 0.774 | |||||||||
| Gelasian | 1.8 | |||||||||
| Neogene | Pliocene | Piacenzian | 2.58 | |||||||
| Zanclean | 3.6 | |||||||||
| Miocene | Messinian | 5.333 | ||||||||
| Tortonian | 7.246 | |||||||||
| Serravallian | 11.63 | |||||||||
| Langhian | 13.82 | |||||||||
| Burdigalian | 15.98 | |||||||||
| Aquitanian | 20.44 | |||||||||
| Paleogene | Oligocene | Chattian | 23.03 | |||||||
| Rupelian | 27.82 | |||||||||
| Eocene | Priabonian | 33.9 | ||||||||
| Bartonian | 37.71 | |||||||||
| Lutetian | 41.2 | |||||||||
| Ypresian | 47.8 | |||||||||
| Paleocene | Thanetian | 56 | ||||||||
| Selandian | 59.2 | |||||||||
| Danian | 61.6 | |||||||||
| Cretaceous | Late Cretaceous | Maastrichtian | Late Maastrichtian/Early Maastrichtian | 66 | ||||||
| Campanian | Late Campanian/Middle Campanian/Early Campanian | 72.1 | ||||||||
| Santonian | Late Santonian/Middle Santonian/Early Santonian | 83.6 | ||||||||
| Coniacian | Late Coniacian/Middle Coniacian/Early Coniacian | 86.3 | ||||||||
| Turonian | Late Turonian/Middle Turonian/Early Turonian | 89.8 | ||||||||
| Cenomanian | Late Cenomanian/Middle Cenomanian/Early Cenomanian | 93.9 | ||||||||
| Early Cretaceous | Albian | Late Albian | 100.5 | |||||||
| Middle Albian | 106.2 * | |||||||||
| Early Albian | 109.9 * | |||||||||
| Aptian | Late Aptian | 113 | ||||||||
| Early Aptian | 119.5 * | |||||||||
| Barremian | Late Barremian/Early Barremian | 121.4 | ||||||||
| Hauterivian | Late Hauterivian/Early Hauterivian | 125.77 | ||||||||
| Valanginian | Late Valanginian/Early Valanginian | 132.6 | ||||||||
| Berriasian | Late Berriasian | 139.8 | ||||||||
| Middle Berriasian | 140.6 * | |||||||||
| Early Berriasian | 142.7 * | |||||||||
| Jurassic | Late Jurassic | Tithonian | Late Tithonian | Middle Tithonian | 145 | |||||
| Early Tithonian | 146.3 * | |||||||||
| Kimmeridgian | Late Kimmeridgian | 149.2 | ||||||||
| Early Kimmeridgian | 152.2 * | |||||||||
| Oxfordian | Late Oxfordian | Middle Oxfordian/Early Oxfordian | 154.8 | |||||||
| 157.9 * | ||||||||||
| Middle Jurassic | Callovian | Late Callovian/Middle Callovian/Early Callovian | 161.5 | |||||||
| Bathonian | Late Bathonian/Middle Bathonian/Early Bathonian | 165.3 | ||||||||
| Bajocian | Late Bajocian | Epizigzagiceras | Parkinsoni/Garantiana/Subfurcatum/Sauzei/Laeviuscula/Discites | 168.2 | ||||||
| Rotundum/Oblatum/Kirschneri/Crassicostatus/Widebayense | Humphresianum | 168.4 | ||||||||
| Early Bajocian | 168.6 * | |||||||||
| Aalenian | Late Aalenian/Middle Aalenian/Early Aalenian | Howelli/Scissum/Westermanni | Concavum/Murchisonae/Opalinum | 170.9 | ||||||
| Early Jurassic | Toarcian | Late Toarcian | Yakounensis/Hillebrandti/Crassicosta | Levesquei/Variabilis/Bifrons | Thouarsense | 174.7 | ||||
| Planulata | 179.3 * | |||||||||
| Arnioceras arnouldi | 179.8 * | |||||||||
| 180.1 | ||||||||||
| Middle Toarcian | 180.4 * | |||||||||
| Kanense | 181.3 * | |||||||||
| Serpentinum/Falciferum/Tenuicostatum | 182 | |||||||||
| Carlottense | 182.3 * | |||||||||
| Early Toarcian | 182.9 * | |||||||||
| Kunae | 183.5 * | |||||||||
| Pliensbachian | Late Pliensbachian/Early Pliensbachian | Spinatum/Margaritatus/Davoei/Ibex/Jamesoni | 184.2 | |||||||
| Freboldi | 185.1 * | |||||||||
| Whiteavesi/Imlayi | Tetraspidoceras | 186.2 * | ||||||||
| 189.2 * | ||||||||||
| Plesechioceras harbledownense/Asteroceras varians/Coroniceras | Canadensis | 190.3 * | ||||||||
| Sinemurian | Late Sinemurian/Early Sinemurian | Raricostatum/Oxynotum/Obtusum/Turneri/Semicostatum/Bucklandi | 192.9 | |||||||
| Pseudaetomoceras | Psiloceras | 196.4 * | ||||||||
| Franziceras/Euphyllites | 196.5 * | |||||||||
| Hettangian | Late Hettangian/Middle Hettangian/Early Hettangian | Angulata/Liasicus/Planorbis | 199.5 | |||||||
| Triassic | Late Triassic | Rhaetian | 201.4 | |||||||
| Norian | Sevatian | 208.5 | ||||||||
| Alaunian | 213.2 * | |||||||||
| Lacian | 216.7 * | |||||||||
| Carnian | Tuvalian | 227 | ||||||||
| Julian | 233.4 * | |||||||||
| Middle Triassic | Ladinian | Longobardian | 237 | |||||||
| Fassanian | 239.7 * | |||||||||
| Anisian | Illyrian | 242 | ||||||||
| Pelsonian | 243.8 * | |||||||||
| Bithynian | 244.7 * | |||||||||
| Aegean | 245.5 * | |||||||||
| Early Triassic | Olenekian | Spathian | 247.2 | |||||||
| Smithian | 248.9 * | |||||||||
| Induan | Dienerian | 251.2 | ||||||||
| Griesbachian | 251.4 * | |||||||||
| 251.902 | ||||||||||