History of Life on Earth

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Chapter 14 The History of Life

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Presentation transcript:

History of Life on Earth

Precambrian Eon Comprises the majority of Earth’s history Oldest fossils Origin of eukaryotes (endosymbiotic theory) Heterotrophic eukaryotes evolved from taking in heterotrophic prokaryotes that functioned as mitochondria Autotrophic eukaryotes evolved from taking in autotrophic and heterotrophic prokaryotes

Precambrian Eon

Endosymbiotic Theory

Paleozoic Era Cambrian explosion 3 major extinctions Pangea formed

Mesozoic Era Evolution of dinosaurs Appearance of birds 2 major extinctions

Cenozoic Era Primates evolved