-
ordovician
(Event #1)This is very little plant life during this period. (Event #30) Colonies of tiny invertebrates call graptolites flourished and vertebrates appear, Fish did not have jaws or teeth and their bodies were covered with bony plates. -
Period: to
geological timeline
geological time scale -
Mississipian period
Swamps and forests cover the land(Event #2). -
Jurassic
(Event 3)Flying reptiles called pterosaurs are in the air now. (Event 13) Whoa those dinos are getting big and dominate the land - Lizzard hipped and bird-hipped appear - carnivores and herbivores have arrived. -
Pennysilvania period
(Event 4) Giant cockroaches appear. (Event 15) Coal deposits form. -
Creatceous
(Event 5) First flowering plants appear - angiosperm. (Event 35) Impact hypothesis - dinosaur mass extinction. -
Oligocene
(Event 6) Himalayas develop due to uplifting caused by the Indian subcontinent and Eurasian continents colliding. (Event 27) Many early mama become extinct, clams and snails flourish. -
Anthropocene
(Event 7) Some scientists believe that human kind has caused mass extinctions of plant and animal specie, polluted the oceans and altered the atmosphere. (Event 14) There is argument as to when this epoch began, some scientist think it began with the industrial age in the early 1800's other think it began with the atomic age in the 1950's. -
Permain period
(Event 8) Applacian mountains are created because of the collision of tectonic plates and savannah form. (Event 38) Enviormental change causes mass extinction of sea invertebrates (Trilobites and eurypterids) at seas retreat. -
Pleistocene
(Event 9) Homosapien (modern humans) appeared and are hunters. (Event 20) Species that did not evolve to survive extreme cold moved to warmer climate areas or became extinct (dire wolf and giant ground sloth.) -
Precambrian
(Event 10) The presence of stromatolites indicates that shallow seas covered much of Earth during intervals in thus period. (Event 11) Nearly half of the valuable mineral deposits in the world occur in the rocks of this period. -
Paleocene
(Event 12) First primates evolve. (Event 29) Small rodents evolve. -
Triassic
(Event 16) Welcome to the world of the dinosaur! Enter the squirrel sized dinosaur and the first forest dwelling mammals appear. (Event 34) Ichthyosaurs are living in the ocean, new invertebrates call ammonite develop. -
Eocene
(Event 17) Flying squirrels, whales and bats appear. (Event 25) world wide temperatures drop about 4 degrees celsius(39.2 degrees fahernheight.) -
Pliocene
(Event 26) First modern horses appear. (Event 18) Various species migrated between continents across land bridges. -
Holocene
(Event 28) Modern human developed agriculture and used tools made of bronze and iron. (Event 19) The last glacial period ended and sea levels rose, Great lakes formed. -
Cambrian
(Event 22) Trilobites appear. (Event 23) Shelled brachiopods appear. -
Miocene
(Event 32) Antarctic icecaps begin to form. (Event 36) Meditterian sea dries up and refills several times due to tectonic forcesa dn dropping sea levels. -
Silurian
(Event 33) Vascular land plants and animals, such as scorpians begin to evolve on land. (Event 24) Eurypterids (sea scorpions), sea stars and coral become more common. -
Devonian
(Event 31) Huge plants begin to develop, early amphibians form.
(Event 37) Age of fishes, fish that can breath out of the water and spend time on land form.
