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LIFE ON EARTH TIME SCALE

LIFE ON EARTH TIME SCALE. FIRST MULTICELLED LIFE ON EARTH. ARCHAEOZOIC. 4 Billion to 570 MYA. THE FIRST FORMS OF LIFE ON EARTH. PALAEOZOIC. 570 MILLION - 250 MILLION YEARS AGO. Worms

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LIFE ON EARTH TIME SCALE

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  1. LIFE ON EARTH TIME SCALE

  2. FIRST MULTICELLED LIFE ON EARTH

  3. ARCHAEOZOIC 4 Billion to 570 MYA

  4. THE FIRST FORMS OF LIFE ON EARTH

  5. PALAEOZOIC 570 MILLION - 250 MILLION YEARS AGO

  6. Worms Worms are the most advanced grade of simple metazoan, and it is this body plan from which all higher animals evolved. Worms have a fluid-filled cavity called a coelom inside the body and variations of this cavity can be seen in all higher animals. In many animals, it has become the sack which holds the internal organs.

  7. MESOZOIC 250 MILLION - 65 MILLION YEARS AGO

  8. ANCIENT JUNGLE

  9. FIRST LUNG FISH AND THE START OF AIR BREATHING ANIMALS

  10. WHALES WHO COULD WALK ON LAND

  11. TERTIARY 65 MILLION - 1.6 MILLION YEARS AGO

  12. Lizard hipped Bird Hipped

  13. Bird Hipped Bird Hipped hip structure similar to that of birds, but they were not the ancestors of birds. The pubis bone (part of the structure of the hip) points downwards and toward the tail

  14. LIZARD HIPPED DINOSAURS They had a hip structure similar to that of lizards - the pubis bone pointed downwards and forwards.

  15. Pleistocene 1.6 MILLION - 16,000 YEARS AGO

  16. FIRST MAMALS

  17. Holocene 16,000 YEARS AGO- TODAY

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