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Pangaea split during the Tertiary Period. The Tertiary Period's climate was hot and humid at the beginning, but ended with an ice age. Many birds people see in the sky today were seen in this time period, but some flightless birds existed in the Tertiary period that are extinct today. Along with birds, fish began to flourish in the rivers and oceans. Sharks, bass, and trout were the major organisms in the water ways. Plants and flowers bloomed. Therefore the number of insects increased.
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There was a mass extinction which killed many animals such as dinosaurs and large reptiles. This allowed the mammals to thrive. The Tertiary Period is known as the "Age of Mammals".
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California ran into North America
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India crashed into Asia.
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The warm climate helped dense forests grow.
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This species came to be.
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This species lived in North America.
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Fish prospered. Bass, trout, and shark evolved.
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Africa crashed into Europe
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This animal lived in South Dakota.
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the cooling climate created open woodlands and gerasslands.
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Flowering plants prioduced nectar which allowed bees and other insects to prosper.
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Glaciers in Antarctica formed.
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The first hominids appeared. They are human ancestors.
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This species emerged.
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The polar ice caps froze and the tepmperature dropped. Land bridges were created which allowed plants and animals to spread.
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