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Nearly half of the valuable mineral deposits in the world occur in the rocks of this period
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The presence of stromatolites indicates that shallow seas covered much of Earth during intervals in this period
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Geological Time Scale
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Trilobites appear
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Shelled brachiopods appear
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There is very little plant life during this period
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Colonies of tiny invertebrates call graptolites florished and vertibrates appear, Fish did not have jaws or teeth and their bodies were covered with bony plates
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Eurypterids (sea scorpions), Sea stars and coral become more common
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Vascular land plants and animals, such as scorpions begin to evolve on land
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Huge plants begin to develop, early amphibians form
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Age of fishes, fish that can breath out of the water and spend time on land form
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coal deposits form
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Swamps and forests cover the land
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Giant cockroaches appear
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Early reptiles resembling large lizards appear
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Appalachain Mountains are created because of the collisions of tectonic plates and savannas form
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Environmental change causes mass extinction of sea invertibrates (trilobites and eurypterids) as the seas retreat
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Ichthyosaurs are living in the ocean, new invertebrates call ammonite develop
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Welcome to the world of the dinosaur! Enter the squirrel sized dinosaur and the first forest dwelling mammals appear
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Flying Reptiles called pterosaurs are in the air now
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Whoa those dinos are getting big and dominate the land lizard hipped appear carnivores and herbivores have arrived
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impact hypothesis dinosaur ass extinction
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First flowering plant appear angiosperm
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First primates evolve
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small rodents evolve
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world wide temperatures drop about 4 degrees celsius (39.2 degrees fahrenheit)
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Flying squirrels, whales and bats appear
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Himalayas develop due to uplifting caused mass extinctions of plant and animal species polluted the oceans and altered the atmosphere
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Many early mammal become extinct, clams and snails flourish
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Mediterranean sea dries up and refills several times due to tectonic forcesa dn dropping sea levels
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Antarctic ice caps begin to form
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First modern horses appear
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Various species migrated between continents across land bridges
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Homosapien (modern humans) appeared and hunters
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species that did not evolve to survive extreme cold moved to warmer climate areas or became extinct (dire wolf and giant ground sloth
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Modern Humans developed agriculture and used tools made of bronze and iron
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The last glacial period ended and sea levels rose, Great lakes formed
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some scientist believe that human kind has caused mass extinction of plant and animal species, polluted the oceans and altered the atmosphere
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There is a argument as to when this epoch began, some scientist think it began with the industrial age early 1800s others think it began with the atomic age in the 1950s
