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Life on Earth Timeline

End of the Cretaceous

Pangaea Split

Megafauna evolved

The Beginning

Marsupial Diversity

Humans arrived

Origin of the Earth

At the end of the Cretaceous, 65 millions years ago, temperatures cooled and the dinosaurs became extinct

possibly 100,000 years ago but definitely present 40,000 years ago

Around 25 million years ago, marsupial diversity was at its greatest and the Australian plate collided with the Asian plate

About 150 million years ago Pangaea split into two landmasses with Australia part of Gondwana joined with Africa, Antarctica, India and South America. This isolated many plants and animals that would become typical of Gondwana flora and fauna

  • 3800 mya - oldest sediment rocks on earth
  • 3400-3500 mya - 2 types of fossils found in rocks in Western Australia
  • 2800-3000 mya - Stromatolites are found in Fig Tree Group of rock in South Africa
  • 2500 mya - oxygen-rich atmosphere
  • 2000 mya - Gunflint Chert rock found on shores of Lake Superior in North America
  • 1500 mya - oldest eucaryotic fossils
  • 500 mya - origin of multicellular organisms

50 mya

150 mya

4000 mya

25 mya

4500 mya

1 mya

Tertiary Australia

Beginning of the Cretaceous

Pagnaea

Around 38 million years ago in the Tertiary Australia split from Antarctica and Australia moved north

About 300 million years ago Australia was part of the supercontinent Pangaea

At the beginning of the cretaceous, 135 million years ago, Australia became a group of islands when the land was invaded by shallow seas. Gondwana began to split apart. Australia was inside the Antarctic Circle at this time and there were polar dinosaurs

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