4567.17 +/- 0.7 Ma: Hadean - Cryptic - Precambrian 4150 Ma: - Precambrian - Basin Groups 4000 Ma: - Precambrian - Basin Groups - Swazian 3975 Ma: - Precambrian - Swazian - Nectarian 3900 Ma: - Precambrian - Swazian - Early Imbrian 3800 Ma: Archean - Eoarchean - Precambrian - Isuan - Qianxin - Swazian 3600 +/- 0 Ma: - Paleoarchean - Isuan - Qianxin - Precambrian - Swazian 3200 +/- 0 Ma: - Mesoarchean - Precambrian - Swazian 3100 Ma: - - Precambrian - Swazian - Fupingan 3000 Ma: - - Precambrian - Fupingan - Randian 2800 +/- 0 Ma: - Neoarchean - Fupingan - Randian - Precambrian 2600 Ma: - - Randian - Precambrian - Wutaian 2500 +/- 0 Ma: Proterozoic - Paleoproterozoic - Siderian - Vaalian - Nullaginian - Wutaian - Huronian - Precambrian 2350 Ma: - - - Nullaginian - Precambrian - Huronian - Vaalian - Luliangian 2300 +/- 0 Ma: - - Rhyacian - Precambrian - Huronian - Vaalian - Luliangian - Nullaginian 2225 Ma: - - - Precambrian - Huronian - Vaalian - Luliangian - Nullaginian - Animikean 2050 +/- 0 Ma: - - Orosirian - Huronian - Nullaginian - Luliangian - Animikean - Precambrian - Mokolian 1800 +/- 0 Ma: - - Statherian - Precambrian - Luliangian - Animikean - Mokolian - Huronian - Carpentarian 1750 Ma: - - - Precambrian - Animikean - Mokolian - Huronian - Carpentarian - Jinningian 1600 +/- 0 Ma: - Mesoproterozoic - Calymmian - Animikean - Mokolian - Carpentarian - Jinningian - Huronian - Precambrian - Helikian 1400 Ma: - - Ectasian - Carpentarian - Jinningian - Precambrian - Helikian - Burzyan - Mokolian - Riphean 1375 Ma: - - - Carpentarian - Jinningian - Precambrian - Helikian - Mokolian - Riphean - Yurmatian 1300 Ma: - - - Jinningian - Precambrian - Helikian - Mokolian - Riphean - Yurmatian - Adelaidean 1200 +/- 0 Ma: - - Stenian - Jinningian - Precambrian - Helikian - Riphean - Yurmatian - Adelaidean - Mokolian 1100 Ma: - - - Jinningian - Precambrian - Helikian - Riphean - Adelaidean - Mokolian - Karatau 1000 +/- 0 Ma: - Neoproterozoic - Tonian - Jinningian - Helikian - Riphean - Adelaidean - Karatau - Precambrian - Mokolian 900 Ma: - - - Helikian - Riphean - Adelaidean - Karatau - Precambrian - Jinningian - Namibian 850 +/- 0 Ma: - - Cryogenian - Riphean - Adelaidean - Karatau - Precambrian - Namibian - Jinningian - Hadrynian 800 Ma: - - - Precambrian - Namibian - Adelaidean - Hadrynian - Sturtian - Sinian 650 Ma: - - - Precambrian - Namibian - Adelaidean - Hadrynian - Sinian - Smalfjord - Varangian - Vendian 640 Ma: - - - Precambrian - Namibian - Adelaidean - Hadrynian - Sinian - Varangian - Vendian - Mortesnes 630 +5/-30 Ma: - - Ediacaran - Precambrian - Namibian - Hadrynian - Sinian - Vendian - Wonokan - Adelaidean 570 Ma: - - - Precambrian - Namibian - Hadrynian - Sinian - Vendian - Adelaidean - Poundian 542 +/- 0.3 Ma: Phanerozoic - Paleozoic - Cambrian - Early Cambrian - Nemakit-Daldynian - Meishuchuan 534 Ma: - - - - Meishuchuan - Tommotian 532 Ma: - - - - Tommotian - Qungzusian 530 Ma: - - - - Qungzusian - Atdabanian 529.5 Ma: - - - - Qungzusian - Atdabanian - Montezuman 524.5 Ma: - - - - Qungzusian - Atdabanian - Dyeran 524 Ma: - - - - Qungzusian - Dyeran - Botomian - Lenian 523 Ma: - - - - Dyeran - Botomian - Lenian - Changlangpuan 520 Ma: - - - - Dyeran - Botomian - Lenian - Changlangpuan - Ordian 518.5 Ma: - - - - Dyeran - Lenian - Changlangpuan - Ordian - Toyonian 518 Ma: - - - - Dyeran - Lenian - Ordian - Toyonian - Longwangmioan 513 +/- 2 Ma: - - - Middle Cambrian - Ordian - Maozhangian - Amgan - Dyeran 512 Ma: - - - - Maozhangian - Amgan - Ordian - Delamaran 510 Ma: - - - - Amgan - Maozhangian - Delamaran - Templetonian 509 Ma: - - - - Amgan - Delamaran - Templetonian - Zuzhuangian 508 Ma: - - - - Amgan - Delamaran - Zuzhuangian - Florian 506 Ma: - - - - Amgan - Delamaran - Zuzhuangian - Undillian 505 Ma: - - - - Amgan - Delamaran - Undillian - Zhungxian 504 Ma: - - - - Amgan - Zhungxian - Boomerangian - Marjuman 502 Ma: - - - - Zhungxian - Boomerangian - Marjuman - Mayan 501 +/- 2 Ma: - - - Late Cambrian - Paibian - Maentwrogian - Marjuman - Ayusokkanian - Mindyallan 497 Ma: - - - - - Marjuman - Ayusokkanian - Maentwrogian - Idamean 496.8 Ma: - - - - - Ayusokkanian - Marjuman - Idamean - Festiniogian 494.5 Ma: - - - - Idamean - Festiniogian - Steptoan - Sakian 493 Ma: - - - - Festiniogian - Aksayan - Sunwaptan 492.5 Ma: - - - - Aksayan - Sunwaptan - Dolgellian 491.5 Ma: - - - - Sunwaptan - Dolgellian - Batyrbayan 491 Ma: - - - - Dolgellian - Batyrbayan - Payntonian - Ibexian 488.3 +/- 1.7 Ma: - - Ordovician - Early Ordovician - Tremadocian - Ibexian - Cressagian - Datsonian 486 Ma: - - - - - Datsonian - Ibexian - Migneintian 485 Ma: - - - - - Ibexian - Migneintian - Warendian - Warendian/Lancefieldian 482 Ma: - - - - - Ibexian - Migneintian - Warendian - Warendian/Lancefieldian - Lancefieldian 478.6 +/- 1.7 Ma: - - - - Arenig - Warendian/Lancefieldian - Lancefieldian - Demingian - Moridunian - Honghuayuanian - Ibexian 475 Ma: - - - - - Honghuayuanian - Ibexian - Whitlandian - Bendigonian - Jeffersonian 473.5 Ma: - - - - - Honghuayuanian - Ibexian - Bendigonian - Jeffersonian - Fennian 473 Ma: - - - - - Honghuayuanian - Ibexian - Fennian - Cassinian - Chewtonian 472 Ma: - - - - - Ibexian - Fennian - Cassinian - Chewtonian - Dawanian 471.8 +/- 1.6 Ma: - - - Middle Ordovician - Ordovician III - Llanvirn - White Rockian - Chewtonian 471 Ma: - - - - - White Rockian - Llanvirn - Castlemanian 470 Ma: - - - - - White Rockian - Llanvirn - Ypeenian 468.1 +/- 1.6 Ma: - - - - Darriwilian - Llanvirn - White Rockian 464 Ma: - - - - - White Rockian - Llandeilo 462 Ma: - - - - - Llandeilo - Mohawkian 460.9 +/- 1.6 Ma: - - - Late Ordovician - Ordovician V - Aurelucian - Gisbornian - Mohawkian - Baotan - Caradoc - Costonian 459 Ma: - - - - - Gisbornian - Mohawkian - Baotan - Caradoc - Aurelucian - Harnagian 458 Ma: - - - - - Gisbornian - Mohawkian - Baotan - Caradoc - Aurelucian - Soudleyan 457 Ma: - - - - - Mohawkian - Baotan - Caradoc - Gisbornian - Longvillian - Burrellian - Shermanian 456 Ma: - - - - - Baotan - Caradoc - Mohawkian - Longvillian - Burrellian - Shermanian - Eastonian 455.8 +/- 1.6 Ma: - - - - Ordovician VI - Caradoc - Mohawkian - Longvillian - Burrellian - Shermanian - Eastonian - Baotan 455 Ma: - - - - - Caradoc - Mohawkian - Shermanian - Eastonian - Baotan - Marshbrookian - Cheneyan 454.5 Ma: - - - - - Mohawkian - Shermanian - Eastonian - Caradoc - Marshbrookian - Cheneyan - Linxiangian 454 Ma: - - - - - Mohawkian - Eastonian - Caradoc - Cheneyan - Linxiangian - Actonian - Edenian 453 Ma: - - - - - Mohawkian - Eastonian - Caradoc - Cheneyan - Linxiangian - Edenian - Onnian - Mayvillian 452 Ma: - - - - - Mohawkian - Eastonian - Caradoc - Linxiangian - Edenian - Onnian - Mayvillian - Streffordian 451 Ma: - - - - - Eastonian - Caradoc - Linxiangian - Edenian - Onnian - Mayvillian - Streffordian - Cincinnatian 450 Ma: - - - - - Caradoc - Linxiangian - Edenian - Onnian - Mayvillian - Streffordian - Cincinnatian - Bolindian 449 Ma: - - - - - Mayvillian - Cincinnatian - Bolindian - Pusgillian - Richmondian - Ashgill 447.5 Ma: - - - - - Cincinnatian - Bolindian - Richmondian - Ashgill - Cautleyan 446.5 Ma: - - - - - Cincinnatian - Bolindian - Richmondian - Ashgill - Rawtheyan 445.6 +/- 1.5 Ma: - - - - Hirnantian - Bolindian - Ashgill - Cincinnatian 443.7 +/- 1.5 Ma: - - Silurian - Early Silurian - Llandovery - Rhuddanian - Keiloran - Longmaxian - Medinan - Alexandrian 439 +/- 1.8 Ma: - - - - - Aeronian - Longmaxian - Medinan - Alexandrian - Idwian - Keiloran 438 Ma: - - - - - - Alexandrian - Idwian - Keiloran - Shinulanian - Niagaran 437.5 Ma: - - - - - - Alexandrian - Keiloran - Shinulanian - Niagaran - Fronian 436 +/- 1.9 Ma: - - - - - Telychian - Shinulanian - Niagaran - Keiloran 433 Ma: - - - - - - Niagaran - Baishaean - Eildonian 429 Ma: - - - - - - Niagaran - Eildonian - Xiushanian 428.2 +/- 2.3 Ma: - - - - Wenlock - Sheinwoodian - Niagaran - Xiushanian - Melbournian 426.2 +/- 2.4 Ma: - - - - - Homerian - Niagaran - Melbournian - Whitwellian - Xiushanian 425.5 Ma: - - - - - - Melbournian - Whitwellian - Niagaran - Guandian 425.4 Ma: - - - - - - Melbournian - Niagaran - Guandian - Gleedonian 422.9 +/- 2.5 Ma: - - - Late Silurian - Ludlow - Gorstian - Niagaran - Melbournian - Guandian 422 Ma: - - - - - - Melbournian - Niagaran - Miaogoalingian 421.3 +/- 2.6 Ma: - - - - - Ludfordian - Miaogoalingian - Melbournian - Cayugan 418.7 +/- 2.7 Ma: - - - - Pridoli - Cayugan - Melbournian 416 +/- 2.8 Ma: - - Devonian - Early Devonian - Lochkovian - Ulsterian - Lianhuashanian 413 Ma: - - - - - Ulsterian - Nagaolingian 411.2 +/- 2.8 Ma: - - - - Praghian - Nagaolingian - Ulsterian 410 Ma: - - - - - Ulsterian - Yujianian 407 +/- 2.8 Ma: - - - - Emsian - Ulsterian 397.5 +/- 2.7 Ma: - - - Middle Devonian - Eifelian - Yingtangian - Ulsterian 391.8 +/- 2.7 Ma: - - - - Givetian - Erian - Yingtangian 391.4 Ma: - - - - - Erian - Dongganglingian 388 Ma: - - - - - Dongganglingian - Senecan 385.3 +/- 2.6 Ma: - - - Late Devonian - Frasnian - Senecan 374.5 +/- 2.6 Ma: - - - - Famennian - Senecan 370 Ma: - - - - - Chatauquan 359.2 +/- 2.5 Ma: - - Carboniferous - Mississippian - Early Mississippian - Tournaisian - Hastarian - Dinantian - Kinderhookian - Shaodongian 349.5 Ma: - - - - - - Dinantian - Hastarian - Kinderhookian - Yanguan 348 Ma: - - - - - - Dinantian - Yanguan - Ivorean - Osagean 345.3 +/- 2.1 Ma: - - - - Middle Mississippian - Visean - Osagean - Chadian - Dinantian - Yanguan 345 Ma: - - - - - - Chadian - Dinantian - Osagean - Datangian 341 Ma: - - - - - - Dinantian - Osagean - Datangian - Arundian 340 Ma: - - - - - - Dinantian - Datangian - Arundian - Meramecian 339 Ma: - - - - - - Dinantian - Datangian - Meramecian - Holkerian 337.5 Ma: - - - - - - Dinantian - Datangian - Meramecian - Asbian 336 Ma: - - - - - - Dinantian - Datangian - Meramecian - Asbian - Brigantian 333 Ma: - - - - - - Dinantian - Brigantian - Dewuan - Chesterian 326.4 +/- 1.6 Ma: - - - - Late Mississippian - Serpukhovian - Pendleian - Dewuan - Chesterian - Namurian - Silesian 326 Ma: - - - - - - Dewuan - Chesterian - Namurian - Silesian - Arnsbergian - Elvirian 325 Ma: - - - - - - Dewuan - Chesterian - Namurian - Silesian - Elvirian - Chokerian 324.5 Ma: - - - - - - Dewuan - Chesterian - Namurian - Silesian - Alportian 318.1 +/- 1.3 Ma: - - - Pennsylvanian - Early Pennsylvanian - Bashkirian - Huashibanian - Namurian - Silesian - Kinderscoutian 317 Ma: - - - - - - Namurian - Silesian - Huashibanian - Marsdenian 315.5 Ma: - - - - - - Namurian - Silesian - Huashibanian - Yeadonian 315 Ma: - - - - - - Huashibanian - Silesian - Yeadonian - Westphalian 314.5 Ma: - - - - - - Huashibanian - Silesian - Westphalian - Cheremshanskian 313.4 Ma: - - - - - - Huashibanian - Silesian - Westphalian - Melekesskian 313 Ma: - - - - - - Silesian - Westphalian - Melekesskian - Dalanian 311.7 +/- 1.1 Ma: - - - - Middle Pennsylvanian - Moscovian - Dalanian - Vereiskian - Atokan/Derryan - Silesian - Westphalian 310 Ma: - - - - - - Vereiskian - Atokan/Derryan - Silesian - Westphalian - Mapingian 309.2 Ma: - - - - - - Atokan/Derryan - Silesian - Westphalian - Mapingian - Kashirskian 308 Ma: - - - - - - Silesian - Westphalian - Mapingian - Podolskian - Desmoinian 307.2 Ma: - - - - - - Silesian - Westphalian - Mapingian - Desmoinian - Myachkovskian 306.5 +/- 1 Ma: - - - - Late Pennsylvanian - Kasimovian - Krevyakinskian - Missourian - Silesian - Stephanian - Mapingian 306 Ma: - - - - - - Missourian - Silesian - Stephanian - Mapingian - Chamovnicheskian 305 Ma: - - - - - - Silesian - Stephanian - Mapingian - Dorogomilovksian - Virgilian 303.9 +/- 0.9 Ma: - - - - - Gzhelian - Stephanian - Silesian - Virgilian - Klazminskian - Mapingian 300.5 Ma: - - - - - - Stephanian - Silesian - Virgilian - Mapingian - Noginskian 299 +/- 0.8 Ma: - - Permian - Early Permian - Asselian - Wolfcampian 294.6 +/- 0.8 Ma: - - - - Sakmarian - Wolfcampian 289 Ma: - - - - - Wolfcampian - Telfordian 284.4 +/- 0.7 Ma: - - - - Artinskian - Telfordian - Wolfcampian 280 Ma: - - - - - Telfordian - Leonardian 278 Ma: - - - - - Leonardian - Mangapirian 275.6 +/- 0.7 Ma: - - - - Kungurian - Mangapirian - Leonardian 270.6 +/- 0.7 Ma: - - - Middle Permian - Roadian - Kazanian - Braxtonian - Thuringian 268 +/- 0.7 Ma: - - - - Wordian - Braxtonian - Thuringian - Kazanian 265.8 +/- 0.7 Ma: - - - - Capitanian - Braxtonian - Thuringian - Kazanian 260.4 +/- 0.7 Ma: - - - Late Permian - Wuchiapingian - Thuringian - Ochoan - Waiitian 253.8 +/- 0.7 Ma: - - - - Changhsingian - Thuringian - Makabewan - Ochoan 251 +/- 0.4 Ma: - Mesozoic - Triassic - Early Triassic - Induan - Griesbachian 250.4 Ma: - - - - - Dienerian 249.7 +/- 0.7 Ma: - - - - Olenekian - Smithian 248 Ma: - - - - - Smithian - Malakovian 247.4 Ma: - - - - - Malakovian - Spathian 245 +/- 1.5 Ma: - - - Middle Triassic - Anisian - Malakovian - Aegean 243 Ma: - - - - - Bithynian - Etalian 241 Ma: - - - - - Etalian - Pelsonian 239 Ma: - - - - - Etalian - Illyrian 237 +/- 2 Ma: - - - - Ladinian - Fassanian - Etalian 232 Ma: - - - - - Fassanian - Kaihikuan 231.4 Ma: - - - - - Kaihikuan - Longobardian 228 +/- 2 Ma: - - - Late Triassic - Carnian - Bananian - Kaihikuan - Julian 225 Ma: - - - - - Bananian - Oretian - Tuvalian 219 Ma: - - - - - Oretian - Tuvalian - Huobachengian 218 Ma: - - - - - Tuvalian - Huobachengian - Otamitan 216.5 +/- 2 Ma: - - - - Norian - Otamitan - Lacinian - Huobachengian 216 Ma: - - - - - Otamitan - Huobachengian - Alaunian 211 Ma: - - - - - Otamitan - Huobachengian - Sevatian 209 Ma: - - - - - Otamitan - Sevatian - Erqiaoan 206 Ma: - - - - - Sevatian - Erqiaoan - Warepan 203.6 +/- 1.5 Ma: - - - - Rhaetian - Warepan - Erqiaoan 203 Ma: - - - - - Erqiaoan - Otapirian 199.6 +/- 0.6 Ma: - - Jurassic - Early Jurassic - Hettangian - Aratauran 196.5 +/- 1 Ma: - - - - Sinemurian - Aratauran 193.3 Ma: - - - - - Aratauran - Lotharingian 189.6 +/- 1.5 Ma: - - - - Pliensbachian - Aratauran 188 Ma: - - - - - Uruoan 183 +/- 1.5 Ma: - - - - Toarcian - Uruoan 175.6 +/- 2 Ma: - - - Middle Jurassic - Aalenian - Xintiangouan - Uruoan 171.6 +/- 3 Ma: - - - - Bajocian - Uruoan - Xintiangouan 169 Ma: - - - - - Xintiangouan - Temaikan 167.7 +/- 3.5 Ma: - - - - Bathonian - Temaikan - Xintiangouan 167 Ma: - - - - - Temaikan - Shaximioan 164.7 +/- 4 Ma: - - - - Callovian - Shaximioan - Temaikan 161.2 +/- 4 Ma: - - - Late Jurassic - Oxfordian - Suiningian 156 Ma: - - - - - Suiningian - Heterian 155.7 +/- 4 Ma: - - - - Kimmeridgian - Heterian - Suiningian 152 Ma: - - - - - Suiningian - Ohauan 150.8 +/- 4 Ma: - - - - Tithonian - Ohauan - Suiningian - Volgian 150 Ma: - - - - - Suiningian - Volgian - Puaroan 149 Ma: - - - - - Volgian - Puaroan - Penglaizhenian 146 Ma: - - - - - Volgian - Puaroan - Penglaizhenian - Portlandian 145.5 +/- 4 Ma: - - Cretaceous - Early Cretaceous - Berriasian - Kochian - Neocomian - Coahulian - Mokoiwian - Portlandian - Volgian 142 Ma: - - - - - Coahulian - Mokoiwian - Kochian - Neocomian - Ryzanian 140.2 +/- 3 Ma: - - - - Valanginian - Mokoiwian - Kochian - Neocomian - Ryzanian - Coahulian 136.4 +/- 2 Ma: - - - - Hauterivian - Neocomian - Coahulian - Mokoiwian - Aritan 130 +/- 1.5 Ma: - - - - Barremian - Mokoiwian - Aritan - Coahulian - Gallic 127 Ma: - - - - - Aritan - Mokoiwian - Gallic - Comanchean 125 +/- 1 Ma: - - - - Aptian - Gallic - Comanchean - Mokoiwian - Miyakoan 119 Ma: - - - - - Comanchean - Gallic - Miyakoan - Korangian 112 +/- 1 Ma: - - - - Albian - Comanchean - Miyakoan - Korangian - Gallic 110 Ma: - - - - - Comanchean - Miyakoan - Gallic - Urutawan 104 Ma: - - - - - Comanchean - Miyakoan - Gallic - Motuan 99.6 +/- 0.9 Ma: - - - Late Cretaceous - Cenomanian - Ngaterian - Gallic - Miyakoan 96.6 Ma: - - - - - Gallic - Ngaterian - Gyliakian 95 Ma: - - - - - Gallic - Gyliakian - Arowhanan 93.5 +/- 0.8 Ma: - - - - Turonian - Gyliakian - Arowhanan - Gallic 93 Ma: - - - - - Gyliakian - Gallic - Mangaotanean 89.3 +/- 1 Ma: - - - - Coniacian - Mangaotanean - Urakawan - Senonian 87 Ma: - - - - - Urakawan - Senonian - Teratan 85.8 +/- 0.7 Ma: - - - - Santonian - Senonian - Teratan - Urakawan 83.5 +/- 0.7 Ma: - - - - Campanian - Senonian - Valdonnian - Urakawan 77.1 Ma: - - - - - Valdonnian - Senonian - Hetonian 77 Ma: - - - - - Senonian - Hetonian - Fuvelian 70.6 +/- 0.6 Ma: - - - - Maastrichtian - Hetonian - Begudian - Senonian 68 Ma: - - - - - Hetonian - Senonian - Rognacian 65.5 +/- 0.3 Ma: - Cenozoic - Paleogene - Paleocene - Early Paleocene - Danian - Teurian - Tertiary - Puercan 62.5 Ma: - - - - - - Tertiary - Teurian - Torrejonian 61.7 +/- 0.2 Ma: - - - - Middle Paleocene - Selandian - Torrejonian - Tertiary - Teurian - Wangerripian 61.5 Ma: - - - - - - Torrejonian - Tertiary - Teurian - Wangerripian - Ynezian 60.5 Ma: - - - - - - Tertiary - Teurian - Wangerripian - Ynezian - Tiffanian 58.7 +/- 0.2 Ma: - - - - Late Paleocene - Thanetian - Wangerripian - Ynezian - Tiffanian - Tertiary - Teurian 56.5 Ma: - - - - - - Ynezian - Tiffanian - Tertiary - Wangerripian - Waipawan 56 Ma: - - - - - - Ynezian - Tertiary - Wangerripian - Waipawan - Clarkforkian 55.8 +/- 0.2 Ma: - - - Eocene - Early Eocene - Ypresian - Clarkforkian - Bulitian - Tertiary - Wangerripian - Waipawan 55.5 Ma: - - - - - - Bulitian - Tertiary - Wangerripian - Waipawan - Wasatchian 53 Ma: - - - - - - Tertiary - Wangerripian - Waipawan - Wasatchian - Penutian 52 Ma: - - - - - - Tertiary - Wasatchian - Penutian - Mangaorapan - Johannian 51 Ma: - - - - - - Tertiary - Wasatchian - Mangaorapan - Johannian - Ulatisian 50.5 Ma: - - - - - - Tertiary - Mangaorapan - Johannian - Ulatisian - Bridgerian 50 Ma: - - - - - - Tertiary - Johannian - Ulatisian - Bridgerian - Heretaungan 48.6 +/- 0.2 Ma: - - - - Middle Eocene - Lutetian - Ulatisian - Bridgerian - Heretaungan - Tertiary - Johannian 48 Ma: - - - - - - Bridgerian - Heretaungan - Tertiary - Johannian - Narizian 47 Ma: - - - - - - Bridgerian - Tertiary - Johannian - Narizian - Porangan 45.4 Ma: - - - - - - Tertiary - Johannian - Narizian - Porangan - Uintan 44 Ma: - - - - - - Tertiary - Johannian - Narizian - Uintan - Bortonian 40.4 +/- 0.2 Ma: - - - - - Bartonian - Tertiary - Narizian - Uintan - Bortonian - Johannian 40 Ma: - - - - - - Tertiary - Narizian - Johannian - Kiaitan - Duchesnean 37.2 +/- 0.1 Ma: - - - - Late Eocene - Priabonian - Narizian - Duchesnean - Tertiary - Johannian 37 Ma: - - - - - - Narizian - Tertiary - Johannian - Chadronian 36 Ma: - - - - - - Tertiary - Narizian - Chadronian - Aldingian 35 Ma: - - - - - - Tertiary - Chadronian - Aldingian - Refugian 33.9 +/- 0.1 Ma: - - - Oligocene - Early Oligocene - Rupelian - Refugian - Tertiary - Chadronian - Whaingaroan - Aldingian 33.5 Ma: - - - - - - Aldingian - Whaingaroan - Tertiary - Orellan - Zemorrian 32 Ma: - - - - - - Whaingaroan - Tertiary - Zemorrian - Whitneyan 30.5 Ma: - - - - - - Whaingaroan - Tertiary - Zemorrian - Arikareean 30 Ma: - - - - - - Whaingaroan - Tertiary - Zemorrian - Arikareean - Janjukian 28.4 +/- 0.1 Ma: - - - - Late Oligocene - Chattian - Zemorrian - Arikareean - Janjukian - Whaingaroan - Tertiary 28 Ma: - - - - - - Arikareean - Janjukian - Tertiary - Zemorrian - Duntroonian 27.5 Ma: - - - - - - Arikareean - Tertiary - Zemorrian - Duntroonian - Longfordian 27 Ma: - - - - - - Arikareean - Tertiary - Zemorrian - Longfordian - Waitakian 23.03 +/- 0.05 Ma: - - Neogene - Miocene - Early Miocene - Aquitanian - Otaian - Tertiary - Zemorrian - Arikareean - Longfordian 22 Ma: - - - - - - Tertiary - Arikareean - Longfordian - Otaian - Saucesian 21 Ma: - - - - - - Arikareean - Longfordian - Tertiary - Saucesian - Hutchinsonian 20.43 +/- 0.05 Ma: - - - - - Burdigalian - Arikareean - Longfordian - Saucesian - Hutchinsonian - Tertiary 20 Ma: - - - - - - Arikareean - Longfordian - Saucesian - Tertiary - Awamoan 19 Ma: - - - - - - Tertiary - Saucesian - Longfordian - Awamoan - Hemingfordian 18.2 Ma: - - - - - - Tertiary - Saucesian - Longfordian - Awamoan - Hemingfordian - Haranoyan 17.5 Ma: - - - - - - Tertiary - Saucesian - Longfordian - Hemingfordian - Haranoyan - Altonian 16.5 Ma: - - - - - - Tertiary - Hemingfordian - Haranoyan - Batesfordian - Relizian - Cliffdenian 15.97 +/- 0.05 Ma: - - - - Middle Miocene - Langhian - Batesfordian - Relizian - Cliffdenian - Tertiary - Tozawan - Hemingfordian 15.5 Ma: - - - - - - Tertiary - Tozawan - Cliffdenian - Balcombian - Luisian - Barstovian 15 Ma: - - - - - - Tozawan - Tertiary - Luisian - Barstovian - Lillburnian - Bairnsdalian 13.65 +/- 0.05 Ma: - - - - - Serravallian - Tertiary - Luisian - Barstovian - Lillburnian - Bairnsdalian - Tozawan 13.5 Ma: - - - - - - Barstovian - Lillburnian - Bairnsdalian - Tertiary - Kaburan - Mohnian 11.8 Ma: - - - - - - Lillburnian - Bairnsdalian - Tertiary - Kaburan - Mohnian - Clarendonian 11.608 +/- 0.005 Ma: - - - - Late Miocene - Tortonian - Bairnsdalian - Kaburan - Mohnian - Clarendonian - Tertiary - Lillburnian 11.5 Ma: - - - - - - Kaburan - Mohnian - Clarendonian - Tertiary - Bairnsdalian - Waiauan 11.1 Ma: - - - - - - Mohnian - Clarendonian - Tertiary - Bairnsdalian - Waiauan - Fujian 10.5 Ma: - - - - - - Clarendonian - Tertiary - Mohnian - Waiauan - Fujian - Mitchellian 10 Ma: - - - - - - Clarendonian - Tertiary - Mohnian - Fujian - Mitchellian - Tongaporutuan 9.5 Ma: - - - - - - Clarendonian - Tertiary - Mohnian - Mitchellian - Tongaporutuan - Yuian 9 Ma: - - - - - - Tertiary - Mohnian - Mitchellian - Tongaporutuan - Yuian - Hemphillian 7.5 Ma: - - - - - - Tertiary - Mitchellian - Tongaporutuan - Yuian - Hemphillian - Delmontian 7.246 +/- 0.005 Ma: - - - - - Messinian - Mitchellian - Tongaporutuan - Yuian - Hemphillian - Delmontian - Tertiary 6 Ma: - - - - - - Mitchellian - Yuian - Hemphillian - Delmontian - Tertiary - Kapitean 5.332 +/- 0.005 Ma: - - - Pliocene - Early Pliocene - Zanclean - Hemphillian - Delmontian - Kapitean - Tertiary - Mitchellian - Yuian 5 Ma: - - - - - - Delmontian - Kapitean - Tertiary - Yuian - Hemphillian - Cheltenhamian 4.8 Ma: - - - - - - Delmontian - Tertiary - Yuian - Hemphillian - Cheltenhamian - Opoitian 4.75 Ma: - - - - - - Tertiary - Yuian - Delmontian - Cheltenhamian - Opoitian - Blancan 4.3 Ma: - - - - - - Tertiary - Yuian - Delmontian - Opoitian - Blancan - Kalimnan 3.6 +/- 0.005 Ma: - - - - Late Pliocene - Piacenzian - Blancan - Kalimnan - Totomian - Waipipian - Delmontian - Tertiary 3.4 Ma: - - - - - - Blancan - Totomian - Waipipian - Delmontian - Tertiary - Yatalan 3 Ma: - - - - - - Blancan - Waipipian - Delmontian - Tertiary - Yatalan - Suchian 2.9 Ma: - - - - - - Waipipian - Tertiary - Blancan - Yatalan - Suchian - Repettian 2.6 Ma: - - - - - - Tertiary - Blancan - Yatalan - Suchian - Repettian - Mangapanian 2.588 +/- 0.005 Ma: - - - - - Gelasian - Tertiary - Yatalan - Suchian - Repettian - Mangapanian - Blancan 2.2 Ma: - - - - - - Tertiary - Yatalan - Suchian - Mangapanian - Blancan - Venturian 1.96 Ma: - - - - - - Tertiary - Suchian - Blancan - Venturian - Nukumaruan 1.9 Ma: - - - - - - Tertiary - Blancan - Nukumaruan - Kechienjian - Wheelerian 1.806 +/- 0.005 Ma: - - - Pleistocene - Early Pleistocene - Wheelerian - Werrikooian - Nukumaruan - Irvingtonian - Kechienjian - Pleistogene - Quaternary 1.5 Ma: - - - - - Werrikooian - Nukumaruan - Irvingtonian - Wheelerian - Pleistogene - Quaternary - Yuzanjian 1.1 Ma: - - - - - Wheelerian - Irvingtonian - Werrikooian - Pleistogene - Quaternary - Yuzanjian - Okehuan - Castlecliffian 0.781 +/- 0.005 Ma: - - - - Middle Pleistocene - Wheelerian - Pleistogene - Quaternary - Yuzanjian - Okehuan - Castlecliffian - Sicilian - Irvingtonian 0.48 Ma: - - - - - Wheelerian - Pleistogene - Quaternary - Castlecliffian - Sicilian - Irvingtonian - Putikian 0.3 Ma: - - - - - Pleistogene - Quaternary - Castlecliffian - Sicilian - Wheelerian - Putikian - Rancholabrean 0.26 Ma: - - - - - Pleistogene - Quaternary - Castlecliffian - Wheelerian - Putikian - Rancholabrean - Tyrrhenian 0.126 +/- 0.005 Ma: - - - - Late Pleistocene - Pleistogene - Quaternary - Castlecliffian - Putikian - Rancholabrean - Tyrrhenian - Wheelerian 0.01143 +/- 0.00013 Ma: - - - Holocene - Quaternary - Pleistogene