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In the Cambrian period, marine invertebrates with external skeleton (Arthpods) appear.
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Widespread marine algae, and fish without jaws
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First great extinction, first land plants
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At this stage there was a diversity of marine life, and the first amphibians appeared.
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The first reptiles and forests of giants ferns appeared.
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Reptile diversity
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Appears the first dinosaurs and mammals
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The Triassic is an event that lasts approximately 50 years.
In this period the first dinosaurs and mammals appear. -
-Appears first flying and aquatic reptiles.
-Appears the first birds.
-Gimnosperme plants dominate the earth's surface -
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-First plants with flowers.
-Extinction of dinosaurs and ammonites. -
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-Alpine orogey begins
-masive extinction from a meteorite impact -
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-Development and diversification of animals
-Glaciation in the northern hemisphere -