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Not many life forms until very end.
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Evolution of fish, insects, and reptiles.
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Marine intertebrates evolve.
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Condonts, ostracods, algae, and seaweeds evolve.
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Thought to be caused by a drop in sea levels as glaciers formed. The followed by rising sea levels as glaciers melted. (Ice Age)
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First air-breathing animals evolve.
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Fish, amphibians, and ammonites evolve.
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Some theories include change in sea level, asteriod impacts, climate change, and new plants chaning soil.
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Land covered in forests so insects evolved and became very large.
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Dinosaurs lived during this time.
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Dinosaurs begin to evolve, while dicynodonts become extinct.
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Earths biggest mass-extinction. Theories are the comet and asteriod hitting earth, volcanic eruption, and loss of oxygen in sea levels.
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Dinosaurs flourish and become very large. Conifers grow.
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Caused by massive floods of lava, breakup of pangea, and opening of Atlantic Ocean.
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End of age of reptiles. Evolution of modern insects and flowering plants.
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Caused by gradula climate change or volcanic eruptions.
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Mammals evolve. Along with humans.
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Evolution of birds, mammals, and various forms of humans.
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The last two million years. Mammals are dominant.
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Said to be caused by humans. To happen in the future. Claimed to be the largest yet.