North American Regional
850 - 0.0114 Ma
Geologic Time
Phanerozoic
Cenozoic
Quaternary
Holocene
Pleistocene
Late Pleistocene
Middle Pleistocene
Calabrian
Gelasian
Neogene
Pliocene
Piacenzian
Zanclean
Miocene
Messinian
Tortonian
Serravallian
Langhian
Burdigalian
Aquitanian
Paleogene
Oligocene
Chattian
Rupelian
Eocene
Priabonian
Lutetian
Ypresian
Paleocene
Thanetian
Selandian
Danian
Mesozoic
Cretaceous
Late Cretaceous
Maastrichtian
Campanian
Santonian
Coniacian
Turonian
Cenomanian
Early Cretaceous
Albian
Aptian
Hauterivian
Valanginian
Berriasian
Jurassic
Late Jurassic
Tithonian
Kimmeridgian
Oxfordian
Middle Jurassic
Callovian
Bathonian
Bajocian
Aalenian
Early Jurassic
Toarcian
Pliensbachian
Sinemurian
Hettangian
Triassic
Late Triassic
Rhaetian
Norian
Carnian
Middle Triassic
Ladinian
Anisian
Early Triassic
Olenekian
Induan
Paleozoic
Permian
Lopingian
Changhsingian
Wuchiapingian
Guadalupian
Capitanian
Wordian
Roadian
Cisuralian
Kungurian
Artinskian
Sakmarian
Asselian
Carboniferous
Pennsylvanian
Gzhelian
Kasimovian
Moscovian
Bashkirian
Mississippian
Serpukhovian
Visean
Tournaisian
Devonian
Late Devonian
Famennian
Frasnian
Middle Devonian
Givetian
Eifelian
Early Devonian
Emsian
Pragian
Lochkovian
Silurian
Pridoli
Ludlow
Ludfordian
Gorstian
Wenlock
Homerian
Sheinwoodian
Llandovery
Telychian
Aeronian
Rhuddanian
Ordovician
Late Ordovician
Hirnantian
Katian
Sandbian
Middle Ordovician
Darriwilian
Dapingian
Early Ordovician
Floian
Tremadocian
Cambrian
Furongian
Stage 10
Jiangshanian
Paibian
Series 3
Guzhangian
Drumian
Stage 5
Series 2
Stage 4
Stage 3
Terreneuvian
Stage 2
Fortunian
Proterozoic
Neoproterozoic
Ediacaran
Cryogenian
Tonian
Age
Rancholabrean
Irvingtonian
Blancan
Hemphillian
Clarendonian
Barstovian
Hemingfordian
Arikareean
Whitneyan
Orellan
Chadronian
Duchesnean
Uintan
Bridgerian
Wasatchian
Clarkforkian
Tiffanian
Torrejonian
Puercan
Maastrichtian
Campanian
Santonian
Coniacian
Turonian
Cenomanian
Albian
Aptian
Barremian
Hauterivian
Valanginian
Berriasian
Tithonian
Kimmeridgian
Oxfordian
Callovian
Bathonian
Bajocian
Aalenian
Toarcian
Pliensbachian
Sinemurian
Hettangian
Rhaetian
Ladinian
Anisian
Smithian
Dienerian
Ochoan
Capitanian
Wordian
Roadian
Leonardian
Wolfcampian
Virgilian
Missourian
Desmoinesian
Atokan
Morrowan
Chesterian
Meramecian
Osagean
Kinderhookian
Chatauquan
Senecan
Erian
Ulsterian
Cayugan
Niagaran
Alexandrian
Gamachian
Richmondian
Maysvillian
Edenian
Mohawkian
Whiterock
Blackhillsian
Tulean
Stairsian
Skullrockian
Sunwaptan
Steptoean
Marjuman
Delamaran
Dyeran
Montezuman
Begadean
Sub-age
Sevatian
Alaunian
Lacian
Tuvalian
Julian
Spathian
Griesbachian
Supereon
Topazan
Period
Hadrynian
