Phanerozoic Eon – Palaeozoic Era

A Short History of the World – from varying sources
542,000,000 B.C. – 142,000,000 B.C.

Updated when new information available. Current update: 01/09/2010.

Legend Color Guide
Geological Time In Descending Order:
 Eons = Cyan | Eras = Dark Green | Periods = Magenta | Epochs = Blue | Stages = Orange | Major Geological Events = Heavy Black Underlined | Cataclysmic Events = Bold Red Underlined |
Note: Some very early ages overlap or have conflicting dates, because different authorities have placed them or named them differently at different times.
Volcanic Explosivity Index (VEI)
Orders of Magnitude. Multiplier = 10: (VEI 6) = (10 X VEI 5):
 Large (Mt. St. Helens) = 5 | Terrific = 6 | Colossal = 7 | Gigantic = 8 | Cataclysmic (Super Volcano) 9 and above |
Culture Time
 Culture Periods = Brown | Not Generally Recognized Events and History = Magenta | Anomalies = Dark Green | Recognized Events and History = Plain Black |

Major Events

The Phanerozoic Eon (Age of Multicellular Animal Life, aka Age of Revealed Life)
• 542,000,000 B.C. – • The Present Date

• 542,000,000 B.C. – • 251,000,000 B.C. – The Palaeozoic Era (Age of Early Life)

• 542,000,000 B.C. – • 488,300,000 B.C. – The Cambrian Era

The Cambrian Explosion

Refers to the geologically sudden appearance of many new animal body plans about 530 million years ago. At this time, at least nineteen, and perhaps as many as thirty-five phyla of forty total, made their first appearance on earth within a narrow five- to ten-million-year window of geologic time. The Cambrian explosion thus marked a major episode of morphogenesis in which many new and disparate organismal forms arose in a geologically brief period of time. – Stephen C. Meyer

• 542,000,000 B.C. – • 513,000,000 B.C. – Early Cambrian Epoch (Caerfai)
• 542,000,000 B.C. – • 532,000,000 B.C. – Meishuchuan Stage (Chinese)
• 542,000,000 B.C. – • 534,000,000 B.C. – Manykaian Age, Nemakit-Daldynian Stage (Russian-Kazakhian Stage)
• 534,000,000 B.C. – • 530,000,000 B.C. – Tommotian Stage (Russian-Kazakhian)
• 532,000,000 B.C. – • 523,000,000 B.C. – Qungzusian Stage (Chinese)
• 530,000,000 B.C. – • 524,000,000 B.C. – Atdabanian Stage (Russian-Kazakhian)
• 529,500,000 B.C. – • 524,500,000 B.C. – Montezuman Stage (North American)
• 524,500,000 B.C. – • 512,000,000 B.C. – Dyeran Stage (North American)
• 524,000,000 B.C. – • 518,500,000 B.C. – Botomian Stage (Russian-Kazakhian)
• 524,000,000 B.C. – • 513,000,000 B.C. – Lenian Stage (Regional)
• 523,000,000 B.C. – • 518,000,000 B.C. – Changlangpuan Stage (Chinese)
• 520,000,000 B.C. – • 510,000,000 B.C. – Ordian Stage (Australian)
• 518,000,000 B.C. – • 513,000,000 B.C. – Toyonian Stage (Russian-Kazakhian)
• 518,000,000 B.C. – • 513,000,000 B.C. – Longwangmioan Stage (Chinese)

514000000BC
• 514,000,000 B.C. – Earth Land Mass Reconstruction

• 513,000,000 B.C. – • 501,000,000 B.C. – Middle Cambrian Epoch (St David”s)
• 513,000,000 B.C. – • 502,000,000 B.C. – Amgan or Solvan Stage (Russian-Kazakhian)
• 513,000,000 B.C. – • 509,000,000 B.C. – Maozhangian Stage (Chinese)
• 512,000,000 B.C. – • 504,000,000 B.C. – Delamaran Stage (North American)

• 510,000,000 B.C. – • 493,000,000 B.C. – Canadian Period

• 510,000,000 B.C. – Tremadoc Epoch
• 510,000,000 B.C. – • 508,000,000 B.C. – Templetonian Stage (Australian)
• 509,000,000 B.C. – • 505,000,000 B.C. – Zuzhuangian Stage (Chinese)
• 508,000,000 B.C. – • 506,000,000 B.C. – Florian Stage (Australian)

• 508,000,000 B.C. – • 505,000,000 B.C. – Kalkarindji Continental Flood Basalt Province, Australia basalt lava volcanic eruption covered at least 650,000 square kilometres with more than 190,000 cubic kilometres of lava.
   Lava field may be even larger. This huge eruption might be the culprit in the first mass animal extinction event in the history of life – animal life had realy taken off prior to this event, but around • 500,000,000 B.C many of the new animals were wiped out. Ref: Mega eruption may have wiped out life 06/27/2006

• 506,000,000 B.C. – • 504,000,000 B.C. – Undillian Stage (Australian)
• 505,000,000 B.C. – • 501,000,000 B.C. – Zhungxian Stage (Chinese)
• 504,000,000 B.C. – • 494,500,000 B.C. – Marjuman Stage (North American)
• 504,000,000 B.C. – • 501,000,000 B.C. – Boomerangian Stage (Australian)
• 502,000,000 B.C. – • 501,000,000 B.C. – Mayan or Menevian Stage (Russian-Kazakhian)

• 501,200,000 B.C. – • 488,300,000 B.C. – Late Cambrian Epoch (Merioneth)
• 501,000,000 B.C. – • 496,800,000 B.C. – Maentwrogian Stage or Dresbachian, Ffestiniogian (Regional)
• 501,000,000 B.C. – • 496,000,000 B.C. – Paibian Stage (ICS)
• 501,000,000 B.C. – • 497,000,000 B.C. – Mindyallan Stage (Australian)
• 501,000,000 B.C. – • 494,500,000 B.C. – Ayusokkanian Stage (Russian-Kazakhian)
• 501,000,000 B.C. – • 497,000,000 B.C. – Mindyallan Stage (Australian)
• 501,000,000 B.C. – • 496,800,000 B.C. – Maentwrogian Stage (Regional)
• 497,000,000 B.C. – • 494,000,000 B.C. – Idamean Stage (Australian)
• 496,800,000 B.C. – • 492,500,000 B.C. – Festiniogian Stage (Regional)
• 494,500,000 B.C. – • 493,000,000 B.C. – Steptoan Stage (North American)
• 494,500,000 B.C. – • 493,000,000 B.C. – Sakian Stage (Russian-Kazakhian)
• 493,000,000 B.C. – • 491,000,000 B.C. – Sunwaptan Stage (North American)
• 493,000,000 B.C. – • 491,500,000 B.C. – Aksayan Stage (Russian-Kazakhian)
• 492,500,000 B.C. – • 488,300,000 B.C. – Dolgellian Stage or Franconian, Trempealeauan, Marjuman-Steptoean) (Regional)
• 491,500,000 B.C. – • 488,300,000 B.C. – Batyrbayan Stage (Russian-Kazakhian)
• 491,000,000 B.C. – • 488,300,000 B.C. – Payntonian Stage (Australian)
• 491,000,000 B.C. – • 471,800,000 B.C. – Ibexian Stage (North American)
• 491,000,000 B.C. – • 488,300,000 B.C. – Payntonian Stage (Australian)

• 488,300,000 B.C. – • 443,700,000 B.C. – Ordovician Period

• 488,300,000 B.C. – • 471,800,000 B.C. – Early Ordovician Epoch
• 488,300,000 B.C. – • 486,000,000 B.C. – Cressagian Stage (European)
• 488,300,000 B.C. – • 478,600,000 B.C. – Tremadocian Stage (ICS)
• 488,300,000 B.C. – • 485,000,000 B.C. – Datsonian Stage (Australian)
• 488,300,000 B.C. – • 486,000,000 B.C. – Cressagian Stage (European)
• 488,300,000 B.C. – • 478,600,000 B.C. – Tremadocian Stage (ICS)
• 486,000,000 B.C. – • 478,600,000 B.C. – Migneintian Stage (European)
• 485,000,000 B.C. – • 475,000,000 B.C. – Warendian/Lancefieldian Stage (Australian)
• 485,000,000 B.C. – • 478,600,000 B.C. – Warendian Stage (Australian)
• 482,000,000 B.C. – • 475,000,000 B.C. – Lancefieldian Stage (Australian)

• 480,000,000 B.C. – Colossal collision in the asteroid belt rains meteorites on Earth

• 478,600,000 B.C. – Arenig Epoch
• 478,600,000 B.C. – • 471,800,000 B.C. – Arenig Stage (ICS)
• 478,600,000 B.C. – • 472,000,000 B.C. – Honghuayuanian Stage (Chinese)
• 478,600,000 B.C. – • 475,000,000 B.C. – Demingian Stage (North American)
• 478,600,000 B.C. – • 475,000,000 B.C. – Moridunian Stage (European)

• 476,100,000 B.C. – • 465,400,000 B.C. – Dyfed Period

• 476,100,000 B.C. – Early Llanvirn Epoch

• 476,000,000 B.C. – • 467,500,000 B.C. – Llanvirn Epoch
• 475,000,000 B.C. – • 473,000,000 B.C. – Bendigonian Stage (Australian)
• 475,000,000 B.C. – • 473,500,000 B.C. – Whitlandian Stage (European)
• 475,000,000 B.C. – • 473,000,000 B.C. – Jeffersonian Stage (North American)
• 475,000,000 B.C. – • 473,000,000 B.C. – Bendigonian Stage (Australian)
• 473,500,000 B.C. – • 471,800,000 B.C. – Fennian Stage (European)
• 473,000,000 B.C. – • 471,800,000 B.C. – Cassinian Stage (North American)
• 473,000,000 B.C. – • 471,000,000 B.C. – Chewtonian Stage (Australian)

• 472,700,000 B.C. – Late Llanvirn Epoch
• 472,000,000 B.C. – • 471,800,000 B.C. – Dawanian Stage (Chinese)

• 471,800,000 B.C. – • 460,900,000 B.C. – Middle Ordovician Epoch
• 471,800,000 B.C. – • 468,100,000 B.C. – Ordovician III Stage (ICS)
• 471,800,000 B.C. – • 464,000,000 B.C. – Llanvirn Stage (General)
• 471,800,000 B.C. – • 462,000,000 B.C. – White Rockian Stage (North American)
• 471,000,000 B.C. – • 470,000,000 B.C. – Castlemanian Stage (Australian)
• 470,000,000 B.C. – • 468,100,000 B.C. – Ypeenian Stage (Australian)

• 468,600,000 B.C. – Early Llandeilo Epoch
• 468,100,000 B.C. – • 460,900,000 B.C. – Darriwilian Stage (ICS)

• 467,500,000 B.C. – • 460,000,000 B.C. – Llandeilo Epoch

• 467,000,000 B.C. – Mid Llandeilo Epoch

• 465,400,000 B.C. – Late Llandeilo Epoch
• 464,000,000 B.C. – • 460,900,000 B.C. – Llandeilo Stage (General)

• 463,900,000 B.C. – • 439,500,000 B.C. – Bala Period

• 463,900,000 B.C. – • 444,000,000 B.C. – Caradoc Epoch
• 460,900,000 B.C. – • 459,000,000 B.C. – Costonian Stage – Porterfield Stage II (Regional)
• 462,000,000 B.C. – • 451,000,000 B.C. – Mohawkian Stage (North American)

• 460,900,000 B.C. – • 443,700,000 B.C. – Late Ordovician Epoch
• 460,900,000 B.C. – • 455,800,000 B.C. – Ordovician V Stage (ICS)
• 460,900,000 B.C. – • 456,000,000 B.C. – Gisbornian Stage (Australian)
• 460,900,000 B.C. – • 454.500,000 B.C. – Baotan Stage (Chinese)
• 460,900,000 B.C. – • 457,000,000 B.C. – Aurelucian Stage (European)
• 460,900,000 B.C. – • 449,000,000 B.C. – Caradoc Stage (General)
• 459,000,000 B.C. – • 458,000,000 B.C. – Harnagian Stage or Rocklandian, Blackriver Stage I, Wilderness Stage II (Regional)

458000000BC
• 458,000,000 B.C. – Earth Land Mass Reconstruction

• 458,000,000 B.C. – • 457,000,000 B.C. – Soudleyan or Kirkfield Stage (Regional)
• 457,000,000 B.C. – • 455,000,000 B.C. – Longvillian Stage – Sherman Stage I, Barneveld Stage II (Regional)
• 457,000,000 B.C. – • 454,000,000 B.C. – Shermanian Stage (Regional)
• 457,000,000 B.C. – • 455,000,000 B.C. – Burrellian Stage (European)
• 456,000,000 B.C. – • 450,000,000 B.C. – Eastonian Stage (Australian)
• 455,800,000 B.C. – • 445,600,000 B.C. – Ordovician VI Stage (ICS)
• 455,000,000 B.C. – • 452,000,000 B.C. – Cheneyan Stage (European)
• 455,000,000 B.C. – • 454,000,000 B.C. – Marshbrookian Stage – Sherman Stage I, Barneveld Stage II (Regional)
• 454,000,000 B.C. – • 453,000,000 B.C. – Actonian Stage – Eden Stage I & II (Regional)
• 454,500,000 B.C. – • 449,000,000 B.C. – Linxiangian Stage (Chinese)
• 454,000,000 B.C. – • 449,000,000 B.C. – Edenian Stage (Regional)
• 453,000,000 B.C. – • 449,000,000 B.C. – Onnian Stage – Eden Stage I & II (Regional)
• 453,000,000 B.C. – • 447,500,000 B.C. – Mayvillian Stage (Regional)
• 452,000,000 B.C. – • 449,000,000 B.C. – Streffordian Stage (European)
• 451,000,000 B.C. – • 443,700,000 B.C. – Cincinnatian Stage (North American)
• 450,000,000 B.C. – • 443,700,000 B.C. – Bolindian Stage (Australian)
• 449,000,000 B.C. – • 443,700,000 B.C. – Ashgill Stage (General)
• 449,000,000 B.C. – • 445,600,000 B.C. – Richmondian Stage (Regional)
• 449,000,000 B.C. – • 447,500,000 B.C. – Pusgillian Stage (European)
• 447,500,000 B.C. – • 446,500,000 B.C. – Cautleyan Stage (European)
• 446,500,000 B.C. – • 445,600,000 B.C. – Rawtheyan Stage (European)
• 445,600,000 B.C. – • 443,700,000 B.C. – Hirnantian Stage (ICS)

• 443,700,000 B.C. – • 416,700,000 B.C. – Silurian Period

• 443,700,000 B.C. – • 422,900,000 B.C. – Early Silurian Epoch

• 443,700,000 B.C. – • 428,200,000 B.C. – Llandovery Sub-Epoch
• 443,700,000 B.C. – • 439,000,000 B.C. – Rhuddanian Stage (ICS)
• 443,700,000 B.C. – • 433,000,000 B.C. – Keiloran Stage (Australian)
• 443,700,000 B.C. – • 438,000,000 B.C. – Longmaxian Stage (Chinese)
• 443,700,000 B.C. – • 438,000,000 B.C. – Medinan Stage (North American)
• 443,700,000 B.C. – • 436,000,000 B.C. – Alexandrian Stage (Regional)

• 443,100,000 B.C. – • 439,500,000 B.C. – Ashgill Epoch

• 439,000,000 B.C. – Ordovician – Silurian Extinction
   First Major Extinction. Toll: 25% of marine families, and 60% of marine genera. 06/17/2005

• 439,000,000 B.C. – • 436,000,000 B.C. – Aeronian Stage (ICS)
• 439,000,000 B.C. – • 437,500,000 B.C. – Idwian Stage (Regional)
• 438,000,000 B.C. – • 421,300,000 B.C. – Niagaran Stage (North American)
• 438,000,000 B.C. – • 433,000,000 B.C. – Shinulanian Stage (Chinese)
• 437,500,000 B.C. – • 436,000,000 B.C. – Fronian Stage (Regional)
• 436,000,000 B.C. – • 428,200,000 B.C. – Telychian Stage (ICS)
• 433,000,000 B.C. – • 428,200,000 B.C. – Eildonian Stage (Australian) (Australian)
• 433,000,000 B.C. – • 429,000,000 B.C. – Baishaean Stage (Chinese)
• 429,000,000 B.C. – • 425,500,000 B.C. – Xiushanian Stage (Chinese)

• 428,200,000 B.C. – • 422,900,000 B.C. – Wenlock Sub-Epoch
• 428,200,000 B.C. – • 426,200,000 B.C. – Sheinwoodian Stage (ICS)
• 428,200,000 B.C. – • 416,000,000 B.C. – Melbournian Stage (Australian)
• 428,200,000 B.C. – • 416,000,000 B.C. – Melbournian Stage (Australian)
• 426,200,000 B.C. – • 425,400,000 B.C. – Whitwellian Stage(Regional)
• 426,200,000 B.C. – • 422.900,000 B.C. – Homerian Stage (ICS)
• 425,500,000 B.C. – • 422,000,000 B.C. – Guandian Stage (Chinese)
• 425,400,000 B.C. – • 422,900,000 B.C. – Gleedonian Stage (Regional)

425000000BC
• 425,000,000 B.C. – Earth Land Mass Reconstruction

• 422,900,000 B.C. – • 418,700,000 B.C. – Ludlow Sub-Epoch

• 422,900,000 B.C. – • 416,000,000 B.C. – Late Silurian Epoch
• 422,000,000 B.C. – • 418,700,000 B.C. – Miaogoalingian Stage (Chinese)
• 421,300,000 B.C. – • 416,000,000 B.C. – Cayugan Stage(North American)
• 422,900,000 B.C. – • 421,300,000 B.C. – Gorstian Stage (ICS)
• 421,300,000 B.C. – • 418,700,000 B.C. – Ludfordian Stage(ICS)

• 418,700,000 B.C. – • 416,000,000 B.C. Pridoli Sub-Epoch

• 416,500,000 B.C. – • 359,200,000 B.C. – Devonian Period

• 416,000,000 B.C. – • 397,500,000 B.C. – Early Devonian Epoch
• 416,000,000 B.C. – • 411,200,000 B.C. – Lochkovian Stage (ICS)
• 416,000,000 B.C. – • 413,000,000 B.C. – Lianhuashanian Stage (Chinese)
• 416,000,000 B.C. – • 391,800,000 B.C. – Ulsterian Stage (North American)
• 413,000,000 B.C. – • 410,000,000 B.C. – Nagaolingian Stage (Chinese)
• 411,200,000 B.C. – • 407,000,000 B.C. – Praghian Stage (ICS)
• 410,000,000 B.C. – • 407,000,000 B.C. – Yujianian Stage (Chinese)

• 408,500,000 B.C. – • 396,300,000 B.C. – Lower Devonian Epoch
• 407,000,000 B.C. – • 397,500,000 B.C. – Emsian Stage (ICS)

• 397,500,000 B.C. – • 385,300,000 B.C. – Middle Devonian Epoch
• 397,500,000 B.C. – • 391,800,000 B.C. – Eifelian Stage (ICS)

• 345,000,000 B.C. – Tetrapods Emerge

   Backboned animals with four legs or limbs. Pederpes finneyae – a short-limbed, large-skulled predator. It was about a meter in length and may have had the look of an ungainly crocodile, had the first proper walking foot.
Ref: Four Legged Creatures Emerged Sooner Than Thought 01/09/2010

• 397,500,000 B.C. – • 391,400,000 B.C. – Yingtangian Stage (Chinese)
• 391,800,000 B.C. – • 388,000,000 B.C. – Erian Stage (North American)
• 391,800,000 B.C. – • 385,300,000 B.C. – Givetian Stage (ICS)
• 391,400,000 B.C. – • 385,300,000 B.C. – Dongganglingian Stage (Chinese)

390000000BC
• 390,000,000 B.C. – Earth Land Mass Reconstruction

• 388,000,000 B.C. – • 370,000,000 B.C. – Senecan Stage (North American)

• 385,300,000 B.C. – • 359,200,000 B.C. – Upper/Late Devonian Epoch
• 385,300,000 B.C. – • 374,500,000 B.C. – Frasnian Stage (ICS)
• 374,500,000 B.C. – • 359,200,000 B.C. – Famennian Stage (ICS)
• 370,000,000 B.C. – • 359,200,000 B.C. – Chatauquan Stage (North American)

• 364,000,000 B.C. – Late Devonian Extinction
   Second Major Extinction. Toll: 95% of all species – 53% of marine families, 84% of marine genera, 70% of land species. 06/17/2005

356000000BC
• 356,000,000 B.C. – Earth Land Mass Reconstruction

• 359,200,000 B.C. – • 299,600,000 B.C. – Carboniferous Period
   Earth”s atmosphere was 35% oxygen, compared to today”s 21%. 09/07/2005

• 359,200,000 B.C. – • 318,100,000 B.C. – Mississippian Epoch

• 359,200,000 B.C. – • 345,300,000 B.C. – Early Mississippian Sub-Epoch

• 359,200,000 B.C. – • 345.300,000 B.C. – Tournaisian Epoch
• 359,200,000 B.C. – • 345,300,000 B.C. – Tournaisian Stage (ICS)

• 359,200,000 B.C. – • 326,400,000 B.C. – Dinantian Epoch (European)
• 359,200,000 B.C. – • 349.500,000 B.C. – Shaodongian Stage (Chinese)

• 359,200,000 B.C. – • 326,400,000 B.C. – Dinantian Epoch (European)
• 359,200,000 B.C. – • 348,000,000 B.C. – Kinderhookian Stage (North American)
• 359,200,000 B.C. – • 348,000,000 B.C. – Hastarian Stage (Regional)

• 349,500,000 B.C. – • 336,000,000 B.C. – Visan Epoch
• 349,500,000 B.C. – • 345,000,000 B.C. – Yanguan Stage (Chinese)
• 348,000,000 B.C. – • 340,000,000 B.C. – Osagean Stage (North American)
• 348,000,000 B.C. – • 345,300,000 B.C. – Ivorean Stage (Regional)
• 345,300,000 B.C. – • 326,400,000 B.C. – Visean Stage (ICS)
• 345,300,000 B.C. – • 341,000,000 B.C. – Chadian Stage (Regional)
• 345,000,000 B.C. – • 333,000,000 B.C. – Datangian Stage (Chinese)

• 345,300,000 B.C. – • 326,400,000 B.C. – Middle Mississippian Sub-Epoch
• 341,000,000 B.C. – • 339,000,000 B.C. – Arundian Stage (Regional)
• 340,000,000 B.C. – • 333,000,000 B.C. – Meramecian Stage (North American)
• 339,000,000 B.C. – • 337,500,000 B.C. – Holkerian Stage (Regional)
• 337,500,000 B.C. – • 333,000,000 B.C. – Asbian Stage (Regional)
• 336,000,000 B.C. – • 326,400,000 B.C. – Brigantian Stage (Regional)
• 333,000,000 B.C. – • 318,100,000 B.C. – Dewuan Stage (Chinese)
• 333,000,000 B.C. – • 318,100,000 B.C. – Chesterian Stage (North American)

• 332,900,000 B.C. – • 325,600,000 B.C. – Serpukhovian Epoch

• 326,400,000 B.C. – • 318,100,000 B.C. – Late Mississippian Sub-Epoch
• 326,400,000 B.C. – • 315,000,000 B.C. – Namurian Stage (European)
• 326,400,000 B.C. – • 318,100,000 B.C. – Serpukhovian Stage (ICS)

• 326,400,000 B.C. – • 299,000,000 B.C. – Silesian Epoch (European)
• 326,400,000 B.C. – • 315,000,000 B.C. – Namurian Stage (European)
• 326,400,000 B.C. – • 326,000,000 B.C. – Pendleian Stage (Regional
• 326,000,000 B.C. – • 325,000,000 B.C. – Arnsbergian Stage (Regional)

• 325,600,000 B.C. – • 300,000,000 B.C. ANOMALY: (U.S. 1912) Iron Pot found in coal.
Note: About coal anomaly finds – before the switch over to using oil to heat homes in the 1940s, people used coal. Around 1930 or so, coal came in irregular lumps which frequently were too large to fit in furnaces and stoves; sometimes people only wanted to burn a small amount of coal – in all these cases, it was the practice to hammer the lumps into smaller more usable sizes. This is the process in which these anomalies were discovered. Later, coal was ground into small uniform lumps before leaving the mines. This is why no anomalies are found in coal today.

• 325,000,000 B.C. – • 324,500,000 B.C. – Chokerian Stage (Regional)
• 324,500,000 B.C. – • 318,100,000 B.C. – Alportian Stage (Regional)

• 318,100,000 B.C. – • 299,000,000 B.C. – Pennsylvanian Epoch

• 318,100,000 B.C. – • 311,700,000 B.C. – Early Pennsylvanian Sub-Epoch

• 318,100,000 B.C. – • 311,700,000 B.C. – Bashkirian Epoch
• 318,100,000 B.C. – • 311,700,000 B.C. – Bashkirian Stage (ICS)
• 318,100,000 B.C. – • 313,000,000 B.C. – Huashibanian Stage (Chinese)
• 318,100,000 B.C. – • 317,000,000 B.C. – Kinderscoutian Stage (Regional)
• 317,000,000 B.C. – • 315,500,000 B.C. – Marsdenian Stage (Regional)
• 315,500,000 B.C. – • 314,500,000 B.C. – Yeadonian Stage (Regional)
• 314,500,000 B.C. – • 313,400,000 B.C. – Cheremshanskian Stage (Russian)
• 313,400,000 B.C. – • 311,700,000 B.C. – Melekesskian Stage (Russian)

• 311,700,000 B.C. – • 306,500,000 B.C. – Middle Pennsylvanian Sub-Epoch

• 311,700,000 B.C. – • 306,500,000 B.C. – Moscovian Epoch
• 311,700,000 B.C. – • 306,500,000 B.C. – Moscovian Stage (ICS)
• 311,700,000 B.C. – • 308,000,000 B.C. – Atokan/Derryan Stage (North American)
• 311,700,000 B.C. – • 309,200,000 B.C. – Vereiskian Stage (Russian)
• 310,000,000 B.C. – • 299,000,000 B.C. – Mapingian Stage (Chinese)
• 309,200,000 B.C. – • 308,000,000 B.C. – Kashirskian Stage (Russian)
• 308,000,000 B.C. – • 307,200,000 B.C. – Podolskian Stage (Russian)
• 308,000,000 B.C. – • 306,500,000 B.C. – Desmoinian Stage (North American)
• 307,200,000 B.C. – • 306,500,000 B.C. – Myachkovskian Stage (Russian)

• 306,500,000 B.C. – • 299,000,000 B.C. – Late Pennsylvanian Sub-Epoch

• 306,500,000 B.C. – • 303,900,000 B.C. – Kasimovian Epoch
• 306,500,000 B.C. – • 303,900,000 B.C. – Kasimovian Stage (ICS)
• 306,500,000 B.C. – • 299,000,000 B.C. – Stephanian Stage (European)
• 306,500,000 B.C. – • 305,000,000 B.C. – Missourian Stage (North American)
• 306,500,000 B.C. – • 306,000,000 B.C. – Krevyakinskian Stage (Russian)
• 306,000,000 B.C. – • 305,000,000 B.C. – Chamovnicheskian Stage (Russian)

306000000BC
• 306,000,000 B.C. – Earth Land Mass Reconstruction

• 305,000,000 B.C. – • 299,000,000 B.C. – Virgilian Stage (North American)
• 305,000,000 B.C. – • 303,900,000 B.C. – Dorogomilovksian Stage (Russian)
• 303,900,000 B.C. – • 300,500,000 B.C. – Klazminskian Stage (Russian)

• 303,900,000 B.C. – • 299,000,000 B.C. – Gzelian Epoch
• 303,900,000 B.C. – • 299,000,000 B.C. – Gzhelian Stage (ICS)
• 300,500,000 B.C. – • 299,000,000 B.C. – Noginskian Stage (Russian)

• 299,000,000 B.C. – • 251,000,000 B.C. – Permian Period
   Oxygen level today is about 30% of the Permian Period. 09/07/2005

• 290,000,000 B.C. – • 259,700,000 B.C. – Rotliegendes Epoch
• 270,600,000 B.C. – • 251,000,000 B.C. – Thuringian (Regional)

• 299,000,000 B.C. – • 270,600,000 B.C. – Early Permian Epoch
• 299,000,000 B.C. – • 294,600,000 B.C. – Asselian Stage (ICS)
• 299,000,000 B.C. – • 280,000,000 B.C. – Wolfcampian Stage (North American)
• 294,600,000 B.C. – • 284,400,000 B.C. – Sakmarian Stage (ICS)
• 289,000,000 B.C. – • 278,000,000 B.C. – Telfordian Stage (New Zealand)
• 284,400,000 B.C. – • 275,600,000 B.C. – Artinskian Stage (ICS)
• 280,000,000 B.C. – • 270,600,000 B.C. – Leonardian Stage (North American)
• 278,000,000 B.C. – • 270,600,000 B.C. – Mangapirian Stage (New Zealand)
• 275,600,000 B.C. – • 270,600,000 B.C. – Kungurian Stage (ICS)
• 270,600,000 B.C. – • 251,000,000 B.C. – Thuringian Stage (Regional)

• 270,600,000 B.C. – • 260,400,000 B.C. – Middle Permian Epoch
• 270,600,000 B.C. – • 268,000,000 B.C. – Roadian or Ufimian Stage (ICS)
• 270,600,000 B.C. – • 260,400,000 B.C. – Kazanian Stage (European)
• 270,600,000 B.C. – • 260,400,000 B.C. – Braxtonian Stage (New Zealand)
• 268,000,000 B.C. – • 265,800,000 B.C. – Wordian Stage (ICS)
• 265,800,000 B.C. – • 260,400,000 B.C. – Capitanian Stage (ICS)

• 260,400,000 B.C. – • 251,000,000 B.C. – Late Permian Epoch
• 260,400,000 B.C. – • 251,000,000 B.C. – Ochoan Stage (North American)
• 260,400,000 B.C. – • 253,800,000 B.C. – Wuchiapingian Stage or Wujiapingian, Djulfian, Longtanian, Rustlerian, Saladoan, Castile, Dzhulfian (ICS)
• 260,400,000 B.C. – • 253,800,000 B.C. – Waiitian Stage (New Zealand)

• 260,000,000 B.C. – • 232,000,000 B.C. ANOMALY: (U.S. 1891) Gold chain found in coal.
Morrisonville, Illinois, USA. An 8 carrot (alloy), gold chain found embedded in coal by Mrs S. W. Culp. As she undertook to take the chain from the coal, the middle of the chain became loosened while each end remained fastened.

• 256,100,000 B.C. – • 247,500,000 B.C. – Zechstein Epoch

255000000BC
• 255,000,000 B.C. – Earth Land Mass Reconstruction

• 253,800,000 B.C. – • 251,000,000 B.C. – Changhsingian Stage or Dorashamian, Dewey Lake, Changxingian, Changshingian, Tatarian (ICS)
• 253,800,000 B.C. – • 251,000,000 B.C. – Makabewan Stage (New Zealand)

• 251,000,000 B.C. – Permian-Triassic Extinction
   Third Major Extinction. Toll: 22% of marine families, 52% of marine genera. 06/17/2005

   300 mile diameter crater discovered "in the Wilkes Land region of East Antarctica, south of Australia, suggests it might have instigated the breakup of the so-called Gondwana supercontinent, which pushed Australia northward…". On the reconstructed map above the crater would be on the bottom middle of Gondwana between the outlines of Australia and Antarctica near the bottom of the map. Ref: Giant Crater Found: Tied to Worst Mass Extinction Ever 06/03/2006

• 251,000,000 B.C. – 65,500,000 B.C. – Mesozoic Era (Age of Reptiles)

• 251,000,000 B.C. – • 199,600,000 B.C. – Triassic Period

• 251,000,000 B.C. – • 245,000,000 B.C. – Early Triassic Epoch
• 251,000,000 B.C. – • 249,700,000 B.C. – Induan Stage or Griesbachian, Brahmanian (ICS)
• 251,000,000 B.C. – • 250,400,000 B.C. – Griesbachian Stage or Ellesmerian, Gangetian (Regional)

• 250,000,000 B.C. – • 241.700,000 B.C. – Scythian Period (T1)

• 250,000,000 B.C. – The Siberian Traps, Russia (Super Volcano – Basaltic Flow) Erupts
   Siberian Plate collided with Laurentia (Europe and North America) forming the Ural Mountains.

• 250,400,000 B.C. – • 249,700,000 B.C. – Dienerian Stage (Regional)
• 249,700,000 B.C. – • 245,000,000 B.C. – Olenekian Stage (ICS)
• 249,700,000 B.C. – • 247,400,000 B.C. – Smithian Stage or Nammalian (Regional)
• 247,400,000 B.C. – • 245,000,000 B.C. – Spathian Stage (Regional)

• 245,000,000 B.C. – • 228,000,000 B.C. – Middle Triassic (T2) Epoch
• 245,000,000 B.C. – • 237,000,000 B.C. – Anisian or Guanlingian Stage (ICS)
• 245,000,000 B.C. – • 243,000,000 B.C. – Aegean Stage (Regional)
• 243,000,000 B.C. – • 232,000,000 B.C. – Etalian Stage (New Zealand)
• 243,000,000 B.C. – • 241,000,000 B.C. – Bithynian Stage (Regional)
• 241,000,000 B.C. – • 239,000,000 B.C. – Pelsonian Stage (Regional)

• 240,000,000 B.C. – • 235,000,000 B.C. – High Triassic Period
   Oldest dinosaur fossil. Similar to Thecodonts and dinosaurs.

• 239,000,000 B.C. – • 237,000,000 B.C. – Illyrian Stage (Regional)

237000000BC
• 237,000,000 B.C. – Earth Land Mass Reconstruction

• 237,000,000 B.C. – • 228,000,000 B.C. – Ladinian (t4) Stage (ICS)
• 237,000,000 B.C. – • 231,400,000 B.C. – Fassanian Stage (Regional)
• 231,400,000 B.C. – • 228,000,000 B.C. – Longobardian Stage (Regional)

• 228,000,000 B.C. – • 199,600,000 B.C. – Upper/Late Triassic (T3) Epoch
• 228,000,000 B.C. – • 216,500,000 B.C. – Carnian Stage (ICS)
• 228,000,000 B.C. – • 225,000,000 B.C. – Julian Stage (Regional)
• 228,000,000 B.C. – • 219,000,000 B.C. – Bananian Stage (Chinese)

227000000BC
• 227,400,000 B.C. – Earth Land Mass Reconstruction
The Carnian Stage may mark the high point of Pangea

• 225,000,000 B.C. – • 216,500,000 B.C. – Tuvalian Stage (Regional)
• 225,000,000 B.C. – • 218,000,000 B.C. – Oretian Stage (New Zealand)
• 219,000,000 B.C. – • 209,000,000 B.C. – Huobachengian Stage (Chinese)
• 218,000,000 B.C. – • 206,000,000 B.C. – Otamitan Stage (New Zealand)
• 216,500,000 B.C. – • 203,600,000 B.C. – Norian Stage (ICS)
• 216,500,000 B.C. – • 216,000,000 B.C. – Lacinian Stage (Regional)
• 216,000,000 B.C. – • 211,000,000 B.C. – Alaunian Stage (Regional)

• 214,000,000 B.C. – Triassic Extinction
   Fourth Major Extinction. Toll: 22% of marine families, 52% of marine genera. 06/17/2005

• 211,000,000 B.C. – • 203,600,000 B.C. – Sevatian Stage (Regional)
• 209,000,000 B.C. – • 199,600,000 B.C. – Erqiaoan Stage (Chinese)
• 206,000,000 B.C. – • 203,000,000 B.C. – Warepan Stage (New Zealand)

• 205,100,000 B.C. – • 180,100,000 B.C. – Liassic Epoch (Lower/Early)
• 203,600,000 B.C. – • 199,600,000 B.C. – Rhaetian Stage (ICS)
• 203,000,000 B.C. – • 199,600,000 B.C. – Otapirian Stage (New Zealand)

• 200,000,000 B.C. – Pangaea began to be split up by massive lava flows in the Central Atlantic Magmatic Province, which includes the Hudson River Palisades, the Amazon Basin, and parts of Spain and West Africa, lava flow covers about 965,000 square miles in the Amazon basin, opening up what is now the Atlantic Ocean, lasted a few million years, totals some 2,700,000 million square miles.
   The next-largest known lava flows are the Deccan Traps in India and the Siberian Traps, each just under half the size of the Central Atlantic lava field.

• 199,600,000 B.C. – • 145,500,000 B.C. – Jurassic Period

• 199,600,000 B.C. – • 175,600,000 B.C. – Early Jurassic Epoch
• 199,600,000 B.C. – • 188,000,000 B.C. – Aratauran Stage (New Zealand)
• 199,600,000 B.C. – • 196,500,000 B.C. – Hettangian Stage (ICS)
• 196,500,000 B.C. – • 189,600,000 B.C. – Sinemurian Stage (ICS)

195000000BC
• 195,000,000 B.C. – Earth Land Mass Reconstruction

• 193,300,000 B.C. – • 189,600,000 B.C. – Lotharingian Stage (Regional)
• 189,600,000 B.C. – • 183,000,000 B.C. – Pliensbachian Stage (ICS)
• 183,000,000 B.C. – • 175,600,000 B.C. – Toarcian Stage (ICS)

• 180,100,000 B.C. – • 159,400,000 B.C. – Dogger Epoch (Middle)

• 175,600,000 B.C. – • 161,200,000 B.C. – Middle Jurassic Epoch
• 175,600,000 B.C. – • 171,600,000 B.C. – Aalenian Stage (ICS)
• 171,600,000 B.C. – • 167,700,000 B.C. – Bajocian Stage (ICS)
• 167,700,000 B.C. – • 164,700,000 B.C. – Bathonian Stage (ICS)
• 164,700,000 B.C. – • 161,200,000 B.C. – Callovian Stage (ICS)
• 175,600,000 B.C. – • 167,000,000 B.C. – Xintiangouan Stage (Chinese)
• 167,000,000 B.C. – • 161,200,000 B.C. – Shaximioan Stage (Chinese)
• 169,000,000 B.C. – • 161,200,000 B.C. – Temaikan Stage (New Zealand)

• 161,200,000 B.C. – • 145,500,000 B.C. – Late Jurassic Epoch
• 161,200,000 B.C. – • 155,700,000 B.C. – Oxfordian Stage (ICS)
• 161,200,000 B.C. – • 149,000,000 B.C. – Suiningian Stage (Chinese)

• 159,400,000 B.C. – • 142,000,000 B.C. – Malm Period (Upper/Late)
• 156,000,000 B.C. – • 152,000,000 B.C. – Heterian Stage (New Zealand)
• 155,700,000 B.C. – • 150,800,000 B.C. – Kimmeridgian Stage (ICS)

152000000BC
• 152,000,000 B.C. – Earth Land Mass Reconstruction

• 152,000,000 B.C. – • 150,000,000 B.C. – Ohauan Stage (New Zealand)
• 150,800,000 B.C. – • 145,500,000 B.C. – Tithonian Stage (ICS)
• 150,800,000 B.C. – • 142,000,000 B.C. – Volgian Stage (Regional)
• 150,000,000 B.C. – • 145,500,000 B.C. – Puaroan Stage (New Zealand)
• 149,000,000 B.C. – • 145,500,000 B.C. – Penglaizhenian Stage (Chinese)
• 146,000,000 B.C. – • 142,000,000 B.C. – Portlandian Stage (Regional)

Compiled by PIF

  1. The Precambrian Eon: 4,567,170,000 B.C. – 2,350,000,000 B.C.
  2. The Proterozoic Eon: 2,500,000,000 B.C. – 542,000,000 B.C.
  3. The Phanerozoic Eon – Palaeozoic Era: 542,000,000 B.C. – 142,000,000 B.C.
  4. The Phanerozoic Eon – Cretaceous Era: 142,000,000 B.C. – 71,300,000 B.C.
  5. The Phanerozoic Eon – Cenozoic Era: 66,000,000 B.C. – 2,000,000 B.C.
  6. The Phanerozoic Eon – Quaternary Period: 1,806,000 B.C. – 12,000 B.C.
  7. The Phanerozoic Eon – Holocene Epoch: 11,430 B.C. – 4128 B.C.
  8. The Phanerozoic Eon – Historical Present: 4000 B.C. – 2009 A.D.
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