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Published byAnnice Tate Modified over 9 years ago
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The Cenozoic Era
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The Cenozoic era started 65 mya – present day We are still in the Cenozoic era “The Age of Mammals”
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Cenozoic Life Mammals dominate; dinosaurs (a major predator of mammals) are extinct so mammals can flourish
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What are Mammals? Mammals are warm-blooded (steady body temperatures), have live babies (no eggs), and are covered with hair or fur The first mammals were small but they evolved during the Cenozoic to: – Larger sizes – Bigger brain capacities – Specialized teeth per their diet – Specialized limbs per their environment
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What allowed Mammals to Evolve? Few predators on land The evolution of things like – Grasses – for grazers like cow/deer/horses
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Large mammals evolved like: – Hornless rhino – Wooly mammoth – Saber-toothed cats
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During the Cenozoic, there were also many ice ages (periods of time when large parts of the continents were covered with ice sheets)
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Human Evolution Our first ancestors evolved about 3.5 mya Modern day humans evolved about 100,000 years ago (likely migrated from Africa)
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Precambrian Era 4.6 bya -540 mya Paleozoic Era 540 mya -248 mya Mesozoic Era 248 mya – 65 mya Cenozoic Era 65 mya - present
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