List of time periods

The categorisation of the past into discrete, quantified named blocks of time is called periodization.[1] This is a list of such named time periods as defined in various fields of study. Major categorization systems include cosmological (time periods in the origin and mass evolution of the universe), geological (time periods in the origin and evolution of the Earth), anthropological and historical (time periods in the origin and evolution of human civilization).

Human time periods

These can be divided broadly into prehistorical periods and historical periods (when written records began to be kept).

In archaeology and anthropology, prehistory is subdivided around the three-age system, this list includes the use of the three-age system as well as a number of various designation used in reference to sub-ages within the traditional three.

The dates for each age can vary by religion. On the [geologic time scale], the [Holocene] epoch starts at the end of the last glacial period of the current ice age (c. 10,000 BCE) and continues to the present. The beginning of the Mesolithic is usually considered to correspond to the beginning of the Holocene epoch.

General periods

  • Pre-History – Period between the appearance of Homo ("humans"; first stone tools c. three million years ago) and the invention of writing systems (for the Ancient Near East: c. five thousand years ago).
    • Paleolithic – the earliest period of the Stone Age
      • Lower Paleolithic – time of archaic human species, predates Homo sapiens
      • Middle Paleolithic – coexistence of archaic and anatomically modern human species
      • Upper Paleolithic – worldwide expansion of anatomically modern humans, the disappearance of archaic humans by extinction or admixture with modern humans; earliest evidence for pictorial art.
    • Mesolithic (Epipaleolithic) – a period in the development of human technology between the Palaeolithic and Neolithic periods.
    • Neolithic – a period of primitive technological and social development, beginning about 10,200 BCE in parts of the Middle East, and later in other parts of the world.
    • Chalcolithic (or "Eneolithic", "Copper Age") – still largely Neolithic in character, where early copper metallurgy appeared alongside the use of stone tools.
    • Bronze Age – not part of prehistory for all regions and civilizations who had adopted or developed a writing system.
    • Iron Age – not part of prehistory for all civilizations who had introduced written records during the Bronze Age.
    • Protohistory – period between prehistory and history, during which a culture or civilization has not yet developed writing but other cultures have already noted its existence in their own writings; the absolute timescale of "protohistory" varies widely depending on the region, from the late 4th millennium BCE in the Ancient Near East to the present in the case of uncontacted peoples.
  • Ancient History – Aggregate of past events from the beginning of recorded human history and extending as far as the Early Middle Ages or the Postclassical Era. The span of recorded history is roughly less than five thousand years, beginning with the earliest linguistic records in the third millennium BCE in Mesopotamia and Egypt.
    • Classical Antiquity – Broad term for a long period of cultural history centered on the Mediterranean Sea, comprising the interlocking civilizations of ancient Greece and ancient Rome, collectively known as the Greco-Roman world. It is the period in which Greek and Roman society flourished and wielded great influence throughout Europe, North Africa and the Middle East.
  • Post-Classical History – Period of time that immediately followed ancient history. Depending on the continent, the era generally falls between the years CE 200–600 and CE 1200–1500. The major classical civilizations that the era follows are Han China (ending in 220), the Western Roman Empire (in 476), the Gupta Empire (in the 550s), and the Sasanian Empire (in 651).
  • Modern History – After the post-classical era
    • Early Modern Period – The chronological limits of this period are open to debate. It emerges from the Late Middle Ages (c. 1500), demarcated by historians as beginning with the Fall of Constantinople in 1453, in forms such as the Italian Renaissance in the West, the Ming dynasty in the East, and the rise of the Aztec in the New World. The period ends with the beginning of the Age of Revolutions.
    • Late Modern Period – Began approximately in the mid-18th century; notable historical milestones included the French Revolution, the American Revolution, the Industrial Revolution and the Great Divergence
    • Contemporary History – History within living memory. It shifts forward with the generations, and today is the span of historic events from approximately 1945 that are immediately relevant to the present time.

Sociological periods

Only for late modern contemporary history.

Technological periods

  • Prehistory
  • Ancient History (Bronze and Iron Age aren't part of prehistory for all regions and civilizations who had adopted or developed a writing system)
  • Late Middle Ages
  • Early Modern history
  • Modern History
    • Industrial Age (1760─1970)
    • Machine Age (1880–1945)
      • Age of Oil (1901–present)
      • Jet Age (1940s)
    • Atomic Age (a.k.a. Nuclear Age) (1945/1950–present) [2]
    • Space Age (1957–present)
    • Information Age (1970–present)
      • The Multimedia Age (1987–present)
      • The Social Age (1996–present)
      • The Big Data Age (2001–present)[3]
    • Experience Age(2012–present)

Wars and financial crisis periods

American periods

  • Classic and Postclassic eras, Central America (200–1519)
  • Early Intermediate, Middle Horizon, Late Intermediate, Late Horizon (Peru, 200–1534)
  • Baroque (New World, 1600–1750)
  • Spanish hegemony (Americas, 1492 – 1832)
  • Reconstruction era (the United States, 1865–1877) (Some of this time period is known as the “Old West”)
  • Gilded Age (the United States, 1875–1900)
  • Progressive Era (the United States, the 1890s–1920s)
  • Jazz Age (the United States, the 1920s–1930s)
  • Information Age (United States, 1970–present)

Australian periods

Southeast Asian periods

  • Srivijaya (Indonesia, 3rd – 14th centuries), Tarumanagara (358–723), Sailendra (8th and 9th centuries), Kingdom of Sunda (669–1579), Kingdom of Mataram (752–1045), Kediri (1045–1221), Singhasari (1222–1292), Majapahit (1293–1500)
  • Chenla (Cambodia, 630 – 802) and Khmer Empire (Cambodia, 802–1432)
  • Anterior Lý dynasty and Triệu Việt Vương, Third Chinese domination, Khúc Family, Dương Đình Nghệ, Kiều Công Tiễn, Ngô dynasty, The 12 Lords Rebellion, Đinh dynasty, Prior Lê dynasty, Lý dynasty, Trần dynasty, Hồ dynasty, Fourth Chinese domination (Vietnam, 544–1427)

Filipino periods

  • Neolithic-Iron Age (c. 10,000 BCE – CE 900)
  • Archaic period (CE 900–1521)
  • Spanish Period (1521–1898)
  • American Period (1898–1946)
  • Third Republic (1946–1972)
  • Marcos era (1972–1986)
  • Fifth Republic (1986–present)

Chinese periods

Central Asian periods

Egyptian periods

  • Prehistoric Egypt (pre-3150 BCE)
  • Early Dynastic Period or Archaic Period (two dynasties) (3150 BCE – 2686 BCE)
  • Old Kingdom (four dynasties) (2686 BCE – 2181 BCE)
  • First Intermediate Period (four dynasties) (2181 BCE – 2055 BCE)
  • Middle Kingdom (three dynasties) (2055 BCE – 1650 BCE)
  • Second Intermediate Period (four dynasties) (1650 BCE – 1550 BCE)
  • New Kingdom (three dynasties) (1550 BCE – 1069 BCE)
  • Third Intermediate Period (five dynasties) (1069 BCE – 664 BCE)
  • Late Period of Ancient Egypt (six dynasties: of these six, two were Persian dynasties that ruled from capitals distant from Egypt) (664 BCE – c. 332 BCE)
  • Argead and Ptolemaic dynasties (332 BCE – 30 BCE)
  • Aegyptus (fifteen Roman dynasties that ruled from capitals distant from Egypt) (30 BCE – 641 CE)
    • Sasanian Egypt (one dynasty) (619-629)
  • Coptic period (300 CE – 900 CE)
  • Egypt under four foreign Arabic dynasties that ruled from capitals distant from Egypt
  • Tulunid dynasty (868–905)
  • Ikhshidid dynasty (935–969)
  • Fatimid dynasty (969–1171)
  • Ayyubid dynasty (1171–1250)
  • Mamluk dynasties (1250–1517)
    • Bahri dynasty (1250–1382)
    • Burji dynasty (1382–1517)
  • Ottoman Egypt (Turk dynasty that ruled from a capital distant from Egypt) (1517–1867)
  • Muhammad Ali dynasty (1805-1953)
    • Khedivate (1867–1914)
    • Sultanate of Egypt (1914–1922)
    • Kingdom of Egypt (1922–1953)
  • Republican Egypt (1953–present)

European periods

Indian periods

Japanese periods

West Asian periods

Mythological and astrological time periods

  • Astrological Ages
    • Age of Taurus
    • Age of Aries
    • Age of Aquarius
  • Greek Mythology (See also: Ages of Man)
    • Golden Age (self-sufficient)
    • Silver Age (self-indulgent)
    • Bronze Age (warlike)
    • Heroic Age (nobly aspirant)
    • Iron Age (violent)
  • Aztec Mythology
    • Nahui-Ocelotl, Destroyed by Jaguars
    • Nahui-Ehécatl, Destroyed by Hurricane
    • Nahuiquiahuitl, Destroyed by Flaming Rain
    • Nahui-Atl, Destroyed by Flood
    • Nahui-Ollin, Destroyed by Earthquakes (current)
  • Indian Ages (See also: Yuga Cycle)
    • Krita (Satya) Yuga, Four legs of morality
    • Treta Yuga, Three legs of morality
    • Dvapara Yuga, Two legs of morality
    • Kali Yuga, Age of darkness (current)

Geologic time periods

The geologic time scale covers the extent of the existence of Earth, from about 4600 million years ago to the present day. It is marked by Global Boundary Stratotype Sections and Points. Geologic time units are (in order of descending specificity) eons, eras, periods, epochs, and ages; and the corresponding chronostratigraphic units, which measure "rock-time", are eonothems, erathems, systems, series, and stages.

The second and third timelines are each subsection of their preceding timeline as indicated by asterisks. The Cenozoic is sometimes divided into the Quaternary and Tertiary periods, although the latter is no longer used officially.

Cosmological time periods

13.8 billion years ago: The Big Bang

Time PeriodDurationDescription
Planck EpochFrom the start to 10−43 seconds after the Big BangVery little concrete [confirmed] information is known about this epoch. Different theories propose different views on this particular time.
Grand Unification EpochBetween 10−43 to 10−36 seconds after the Big BangThe result of the universe expanding and cooling down during the Planck epoch. All fundamental forces except gravity are unified.
Electroweak EpochBetween 10−36 seconds to 10−12 seconds after the Big BangThe universe cools down to 1028 kelvin. The fundamental forces are split into the strong force and the electroweak force.
Inflationary EpochBetween 10−36 seconds to 10−32 seconds after the Big BangThe shape of the universe flattens due to cosmic inflation.
Quark EpochBetween 10−12 seconds to 10−6 seconds after the Big BangCosmic inflation has ended. Quarks are present in the universe at this point. The electroweak force is divided again into the weak force and electromagnetic force.
Hadron EpochBetween 10−6 seconds to 1 second after the Big BangThe universe has cooled enough for quarks to form hadrons, protons, neutrons.
Lepton EpochBetween 1 second to 10 seconds after the Big BangMost hadrons and anti-hadrons annihilate each other, leaving behind leptons and anti-leptons.
Photon EpochBetween 10 seconds to 370,000 years after the Big BangMost leptons and anti-leptons annihilate each other. The universe is dominated by photons.
NucleosynthesisBetween 3 minutes to 20 minutes after the Big BangThe temperature of the universe has cooled down enough to allow atomic nuclei to form via nuclear fusion.
RecombinationAbout 377,000 years after the Big BangHydrogen and helium atoms form.
ReionizationBetween 150 million and 1 billion years after the Big BangThe first stars and quasars form due to gravitational collapse.

See also

  • Art of Europe
  • Geologic time scale
  • List of fossil sites with link directory.
  • List of timelines around the world.
  • Logarithmic timeline shows all history on one page in ten lines.
  • Periodization for a discussion of the tendency to try to fit history into non-overlapping periods.

References

Citations

  1. Adam Rabinowitz. And kingIt’s about time: historical periodization and Linked Ancient World Data. Study of the Ancient universe Papers, 2014.
  2. Iles, Dr Louise (December 30, 2016). "Big digs: The year 2016 in archaeology". BBC News. Retrieved January 3, 2017.
  3. Lohr, Steve (February 11, 2012). "Opinion | Big Data's Impact in the World". The New York Times. ISSN 0362-4331. Retrieved July 2, 2019.
  4. The area had settlements as far back as 9000 BC; see Timeline of ancient Greece
  5. Bowman 2000, pp. 118–161.
  6. The Venture of Islam, Volume 2: The Expansion of Islam in the Middle Periods (1974), p. 3.
  7. A Concise History of the Middle East (2015), p. 53.

Sources cited

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