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Mesosoic Era

Mesosoic Era. The Mesozoic Era. The Mesozoic Era occurred 248 m.y.a – 65 m.y.a . It is referred to as the “Age of Reptiles” because of the dinosaurs . Mesozoic literally means middle animals . Triassic Period: 248 mya – 65 mya. 220 mya : Pangea is one complete piece

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Mesosoic Era

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  1. Mesosoic Era

  2. The Mesozoic Era The Mesozoic Era occurred 248 m.y.a – 65 m.y.a. It is referred to as the “Age of Reptiles” because of the dinosaurs. Mesozoic literally means middle animals.

  3. Triassic Period: 248 mya – 65 mya • 220 mya: Pangeais one complete piece • First dinosaursand marinereptiles • 210 mya: North America and Africasplit, beginning the breakup of Pangaea

  4. Jurassic Period: 206 mya – 144 mya • Dinosaurs at their peak. Giant dinosaurs • Earliest birds/ mammals • Eurasia and Africa split apart

  5. Archaeopteryx

  6. Cretaceous Period: 144 – 65 mya • Great Cretaceous Terminal Catastrophe: dinosaurs, most marine plants and animals die • Flowering plants and deciduous trees flourish • Atlantic Ocean starts to form • Peak of oil forming conditions • Eurasiaand Africa split

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  8. Cenozoic Era – “Age of Mammals” The Cenozoic is the shortestera, spanning only about 65 million years. It is often referred to as the age of mammals, because mammals were the largestland animals during this era. The Cenozoic is divided into two periods, the Tertiaryand the Quaternary. Each period is further divided into epochs.

  9. Tertiary: • Paleocene: 67 mya – 53 mya; modern birds, first primates. Rocky mountains uplift

  10. Tertiary: • Eocene: 53 mya – 40 mya; earliest horses, rhinos, camels, North America splits from Europe, Himilayasstart to form.

  11. Tertiary: • Oligocene: 40 mya – 25 mya; earliest elephants, Baja California splits from Mexico

  12. Tertiary • Miocene: 25 mya – 11 mya; first homonids,

  13. Quaternary • Pliocene: 11 mya – 2 mya. Rapid spread of grazing animals. Peak of mammals, “Lucy”3 mya

  14. Quaternary • Pleistocene: 2 mya – 10,000 ya; earliest modern man, giant mammals die out. Homo sapiens(600,000). Grand Canyon starts to form

  15. Pleistocene

  16. Quaternary • Quaternary: 10,000 years ago – today; Man dominates, domestic animals flourish, Great Lakes forms as glaciers retreat.

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