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1; There is very little plant life 23; Shelled brachiopods appear
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Geological Timescale
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24; Eurypterids, sea star, and coral become more common 30; grapholites flourish, fish did not have jaws or teeth.
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5; First flowering plants appear 21; Early reptiles resembling large lizards appear
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33 Vascular land plants and animals, such as scorpions begin to evolve on land. 37; Age of Fishes, fish that can breathe out of water and spend time on land form
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11; Nearly half of the valuable mineral deposits in the world occur in the rocks of this period 15; coal deposits form.
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2; Swamps and forests cover the land 31;huge plants develop, early amphibians form
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4; Giant cockroaches appear 32; Antarctic icecaps begin to form
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6; Himalayas develop due to uplifting caused by the Indian subcontinent and Eurasian continents colliding 38; Enviromental change causes mass extinction.
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16; Welcome to the world of Dinosaur! 27; Many early mammals become extinct.
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3;Flying reptiles are in the air now. 13; Whoa those dines are getting big.
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34; Ichthyosaurs are living in the ocean 35; Impact hypothesis
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17; Flying squirrels, whales, and bats appear 26; First modern horses appear.
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12; first primates evolve 29; small rodents appear
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8; Appalachian mountains form 10; shallow seas covered much of earth.
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25; World wide temperatures begin to drop 36; Mediterranean sea dries and refills
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20; species that did not develop died 18; various species migrated
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9; Humans appear and are hunters 25; world wide temperatures drop.
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19; last glacial period ends.28; modern humans develop
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7; human kind messes a lot of stuff up
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