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  • Period: 4600 BCE to 3800 BCE


    There is no life on the Earth, Volcanic eruptions, rain cools the planet and oceans form. In the early Archaic, the heat flux of the Earth was nearly three times higher than it is today, and twice that in the early Proterozoic (2,500 a.m.).
  • Period: 3800 BCE to 2500 BCE


    Precambrian:nIt is the first and longest stage in the history of the Earth. Methanogenesis (prokaryotes)
    cyanobacteria,presence of oxygen in the air.
    formation of the lithosphere, hydrosphere, atmosphere, the origin and early evolution of the earth.
  • Period: 850 BCE to 635 BCE


    It is the second geologic period of the Neoproterozoic Era.
    Its name refers to the glacial deposits found in tropical latitudes, followed by carbonate sediments
    In general, it is considered to be considered at least two major global glaciations: Sturtian and Marinoan/Varanger.
  • Period: 635 BCE to 542 BCE


    It is the third and last geological period of the Neoproterozoic Era.
    This period is perhaps the origin of the animals, about 570 million years ago and is famous for its "Ediacaran fauna".
    Multicellular creatures appear.
  • Period: 488 BCE to 443 BCE


    It is the first of six periods or series of the Paleozoic Era, also called Primary Era.
    During this period an explosion of life occurs, and for the first time in the fossil record more complex than sponges or jellyfish multicellular organisms are distinguished. Among the creatures period include, for example, green algae Volvox type
  • Period: 488 BCE to 251 BCE


    It is the first era of the Phanerozoic Eon, between Eon Proterozoic and Mesozoic Era.
    Geologically, the Paleozoic starts shortly after the breakup of the supercontinent Pannotia and ends with the formation of the supercontinent Pangea. For most of the era, the surface of the Earth is divided into a relatively small number of continents.
    The Paleozoic ranging from the proliferation of animals with shells or exoskeletons so far when the world began to be dominated by large reptiles.
  • Period: 443 BCE to 416 BCE


    Es el segundo periodo geológico de la era Paleozoica.
    successor before the Cambrian and Silurian.
    During this period, one day was 21 hours and no animals on land by a shortage of oxygen in the atmosphere. There are many fossils, among them trilobites and in some regions the oil and gas were formed.
  • Period: 443 BCE to 416 BCE


    It characterized in that the ocean level was high, so that there is ample record of marine sediments on every continent. Wide shallow shelf seas stretched in the tropics. the placodermos, spiny sharks and cartilaginous fish appear. Terrestrial plants were restricted to marshy environments. In some areas oil and gas are formed.
  • Period: 416 BCE to 359 BCE


    It is the fourth period of the Paleozoic Era, after the Silurian and before Carboniferous.
    With regard to the paleogeography, the landmasses finished distributed between a supercontinent in the south, Gondwana, and another in the north, at the height of Ecuador, called Laurasia, which started the period as two cratons in collision, Laurentia and Baltica initially separated by the Iapetus ocean. In the long run both converged for, later, forming the single supercontinent called Pangea.
  • Period: 359 BCE to 299 BCE


    It is characterized by large tracts of forests were successively buried, giving rise to coal strata. While they extinguished the primitive fish, the cartilaginous and osseous expand. Amphibians invade the land and begin their development Reptiles that during the Jurassic period will have its climax.
  • Period: 299 BCE to 251 BCE


    It is the sixth and last period of the Paleozoic era.
    In the Permian there were significant climate change with a general trend in tropical climates to drier and arid conditions. There was a contraction of the marshes. lot of tree ferns (Lycopodiophyta) and amphibians, requiring humid conditions were extinguished. The seed ferns, reptiles and mammal-like reptiles inherited the earth. Carboniferous glaciers on the southern polar region fell during the Permian Gondwana.
  • Period: 251 BCE to 199 BCE


    It is one of the three geological periods of the Mesozoic Era.
    The first mammals, which evolved from mammal-like reptiles made their appearance in this period, possibly by climate changes that occurred, and continental drift, that motivated the great marine regression Triassic: all lands were united (a Conversely to a marine transgression) forming supercontinent Pangaea (divided again in early Jurassic), so passed to predominate carbonates.
  • Period: 199 BCE to 145 BCE

    MESOZOIC: Jurassic

    This period is characterized by the hegemony of the great dinosaurs and excision of Pangea and Gondwana in Laurasia continents. Australia latter split (upper Jurassic and early Cretaceous), just as Laurasia was divided into North America and Eurasia, giving rise to new species of mammals
  • Period: 145 BCE to 65 BCE


    This impact could have caused the mass extinction that occurred at the end of this period, which disappeared, among many other groups Dinosaurs. This event marks the end of the Mesozoic Era. It is after the Jurassic and before the Paleocene of the Cenozoic Era.
    In the mid-Cretaceous formation of more than 50% of world oil reserves known today, which include localized concentrations around the Persian Gulf and the region between the Gulf of Mexico it occurred and the coast of Venezuela.
  • Period: 55 BCE to 33 BCE


    It is the first geologic epoch of the Paleogene period, turn the first period of the Cenozoic era.
    The Paleocene is immediately after the mass extinction of the end of the Cretaceous, known as KT (Cretaceous-Tertiary) boundary, which marks the disappearance of the dinosaurs (the Cretaceous-Paleogene extinction event). The disappearance of the dinosaurs left uncovered most ecological niches worldwide
  • Period: 33 BCE to 23 BCE


    During this time they formed some of the most significant mountain ranges in the world, such as the Alps or the Himalayas, and occurred several important climate changes: the Paleocene-Eocene Thermal Maximum, which increased the temperature of the planet and defines the beginning of this geological epoch ; and Azolla event, a global cooling that would lead to the first glaciations. The mass extinction Great Coupure marks the end of the Eocene.
  • Period: 23 BCE to 5 BCE


    The Cenozoic is also called the age of mammals, animals, the extinct dinosaurs in the late Cretaceous, suffered an extraordinary adaptive radiation and became the characteristic fauna. about 30 million years ago came the first higher primates (the most primitive were present over 65 million years ago), although Homo sapiens did not appear until about 200,000 years ago.
  • Period: 5 BCE to 2 BCE


    Miocene, a division of the geologic time scale, is the fourth geological epoch of the Cenozoic era and the first time the Neogene period.
    In this period he continued the elevation of mountain ranges such as the Pyrenees, the Alps and the Himalayas. The erosion favored by these orogénesis originated sediments and oil deposits in areas that were shallow marine basins. The temperature was lower than the current and ice masses originated in Antarctica.
  • Period: 5 BCE to 2 BCE


    Essentially modern mammals.
    Pliocene borders are not set as an easily identifiable global event, but as a series of regional boundaries between the warmer Miocene and Pliocene colder. The top barrier was initially located at the beginning of the Pleistocene ice ages, but is now believed that this date is too recent.
    The oceans remain relatively warm during the Pliocene, despite the constant cooling.
  • Period: 2 BCE to 1 BCE


    It is the sixth time of Cenozoic Era and the oldest of the two that make up the Quaternary Period (or third if the Neogene Period, as proposed by the International Commission on Stratigraphy, be extended to the present).
    The Pleistocene covers the last glaciations, until episode Younger Dryas including, that interrupted the last glaciación.2 the end of the Younger Dryas has been dated approximately 9600 a. C. The Pleistocene corresponds to the archaeological Paleolithic.
  • 1 BCE


    Günziense ice Günz or denominations are considered first Quaternary glacial by classical classification Penck and Bruckner (1909); 1 although there has been found that previous episodes, called Donau and Biber. It began 1.1 million years ago and ended 750,000 ago when gave way to Günz-Mindel interglacial period.
    His name, like those of other glaciations, is due to Alpine river which marks the border reached by the ice in Central Europe (Günz River).
  • 1 BCE


    Mindel glaciation known as in Europe and in America as Kansas is estimated that began 580,000 years ago and ended 390,000, although these dates are subject to review, since it seems that the frequency of ice ages was higher. It is glaciation in the ice reached its greatest extent
  • 1 BCE


    The Riss glaciation known as in Europe, as in America Illinois and other names in other parts of the world began 200,000 years ago and ended 140 000, all during the Pleistocene.
    This is part of the ice age known as Quaternary glaciation that began 2.58 million years ago and which we are still. Within this group of glacial and interglacial periods it occurred after Mindel-Riss interglacial and was followed by interglacial Riss-Würm in Europe.
  • 1 BCE


    The last glacial or last ice age period is the last more or less recent in the history of the Earth in which large areas of the earth's surface were occupied by ice sheets, the climate cooled global period, which affected tropics and even caused a marine regression which decreased the surface of oceans and seas. The main areas covered by ice were the Patagonian Andes, Venezuelan Andes, Fennoscandia, New Zealand, the Alps, North American Cordillera, the area of the Great Lakes.
  • Period: 1 BCE to 2


    It is an interglacial period in which the temperature was milder and different icecaps disappeared or lost volume, which caused a rise in sea level. This made Indonesia, Japan and Taiwan secede from Asia; Britain, continental Europe, and New Guinea and Tasmania, Australia. In addition, it resulted in the formation of the Bering Strait, which connects the Arctic Ocean with the Pacific Ocean, where there was land.
  • Period: 1 BCE to 1 BCE


    the Anthropocene began about 8000 years ago with the emergence and growth of agriculture. At this point, humans were dispersed across all continents (Antarctica bar) and the Neolithic Revolution began its course. During this period, humans developed agriculture and livestock replacing hunter-gatherers. Such innovations were followed by a wave of extinctions, beginning with large land mammals and birds. This wave was driven by the direct activity of humans (eg, hunting)
  • Period: 1 BCE to 1 BCE


    For their study, the Prehistory is divided into three periods that correspond to the evolution of humanity.
    The first period is the Palaeolithic. This step corresponds in real time line to 2,500,000 B.C. - 10,000 B.C.
    It is the oldest in the history of mankind Period.
  • Period: 1 BCE to 1 BCE


    The Lower Paleolithic is the first stage of the Old Stone Age covers about 2,500,000 B.C. - 127,000 B.C.
    Human life was nomadic, foraging for food, and their activity was based on gathering wild fruits, fishing and hunting with the earliest stone tools.
  • Period: 1 BCE to 1 BCE


    The Middle Paleolithic extends approximately between 100,000 and 35,000 BC. Prehistoric man built the first outdoor cabanas for protection from inclement weather.
  • Period: 1 BCE to 1 BCE


    The Upper Paleolithic is between 35,000 years and 10,000. C. and represents the final stage of the Paleolithic. This period of prehistory is characterized by the emergence of homo sapiens sapiens. You can highlight the mastery of fire to fight the cold, cook food and gain hours of daylight
  • Period: 1 BCE to 1 BCE


    During the Mesolithic ranges from 10000 to. C. - 5000. C also profound climate changes occur from 10000 to. C. This determines that living conditions will improve and that the store man to leave gradually the caves to live outdoors.
  • Period: 1 BCE to 1 BCE


    Ranges from 8,000 B.C. - 6,000 B.C. In this period they learn to plant seeds and discover agriculture and livestock. Dejan wandering in search of food and become sedentary settling in a place permanently.
  • Period: 1 BCE to 1 BCE


    ranges from 6,000 B.C. - 3,600 a.C.El copper was one of the first metals used by the man, initially using it in its natural state, native copper, and did not know the mechanisms by which could melt the mineral
  • Period: 1 BCE to 1 BCE


    ranges from 3,600 B.C. - 1200 ACLA Bronze Age human culture developed prior to the introduction of iron and most of the tools and weapons that were manufactured was already bronce.en this period various materials combine to make the tools, used bronze for weapons, copper is still used as bone, but no longer used stone because metals are more malleable and resistant.
  • Period: 1 BCE to 1 BCE


    Ranges from 1,200 B.C. - 200 A.C. ending the Age of Metals. The Iron Age is the last period of prehistory before the beginning of history with the invention of the escritura.Este prehistoric period is characterized by the abandonment of bronze Iron benefit due to the abundance of this mineral, its great hardness, high melting temperature and its cost, cheaper than bronze.
  • Period: 1 BCE to 1 BCE


    Mesopotamia is the site of the earliest developments of the Neolithic Revolution from around 10,000 BCE. It has been identified as having "inspired some of the most important developments in human history including the invention of the wheel, the planting of the first cereal crops and the development of cursive script, mathematics, astronomy and agriculture.
  • Period: 1 BCE to 1 BCE


    ncient history is the 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 5,000 years, beginning with Sumerian Cuneiform script, the oldest discovered form of coherent writing from the protoliterate period around the 30th century BC.
  • Period: 1 BCE to 1 BCE


    In the history of Europe, the Middle Ages or medieval period lasted from the 5th to the 15th century. It began with the fall of the Western Roman Empire and merged into the Renaissance and the Age of Discovery. The Middle Ages is the middle period of the three traditional divisions of Western history: classical antiquity, the medieval period, and the modern period. The medieval period is itself subdivided into the Early, High, and Late Middle Ages.
  • Period: 1 BCE to 1 BCE


    is a period in European history, from the 14th to the 17th century, regarded as the cultural bridge between the Middle Ages and modern history. It started as a cultural movement in Italy in the Late Medieval period and later spread to the rest of Europe, marking the beginning of the Early Modern Age.
  • Period: 1 BCE to 1 BCE


    The Age of Discovery is an informal and loosely defined European historical period from the 15th century to the 18th century, marking the time in which extensive overseas exploration emerged as a powerful factor in European culture and globalization.
  • Period: 1 BCE to 1 BCE


    The early modern period of modern history follows the late Middle Ages of the post-classical era. Although the chronological limits of the period are open to debate, the timeframe spans the period after the late portion of the post-classical age (c. 1500), known as the Middle Ages, through the beginning of the Age of Revolutions (c. 1800) and is variously demarcated by historians as beginning with the Fall of Constantinople in 1453.
  • Period: 1 BCE to 1 BCE


    The early modern period began approximately in the early 16th century; notable historical milestones included the European Renaissance and the Age of Discovery.
  • Period: 1 BCE to 1 BCE


    Ranging from the Copper Age 6,000 BC to the Iron Age 200 ACCEL development of metallurgy began with copper, but the metal was too soft, so that later was replaced by bronze, a mixture or alloy of copper and tin. Finally, the properties of iron metal were discovered and this eventually became the most widely used to manufacture all kinds of tools.
    The main economic activity remained agriculture and livestock.
  • Period: 1 BCE to 1 CE


    The Neolithic Age, Era, or Period, or New Stone Age, was a period in the development of human technology, beginning about 10,200 BC, according to the ASPRO chronology, in some parts of the Middle East, and later in other parts of the world and ending between 3,500 and 2,000 BC. Traditionally considered the last part of the Stone Age, the Neolithic followed the terminal Holocene Epipaleolithic period and commenced with the beginning of farming, which produced the "Neolithic Revolution"
  • Period: 1 BCE to 1 BCE


    Contemporary history is a subset of modern history which describes the historical period from approximately 1945 to the present.[1] The term "contemporary history" has been in use at least since the early 19th century.
    Contemporary history is politically dominated by the Cold War (1945–91) between the United States and Soviet Union whose effects were felt across the world. In this geopolitical context, European colonial empires in Africa and Asia fell apart between 1945 and 1975.