Life, the Universe and Everything
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Big Bang creates the universe | 14 BYA
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| Formation of Earth | 4.5-4.6 BYA
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| Formation of the moon | 4.4-4.5 BYA
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| Formation of oldest terrestrial rocks | 3.96 BYA
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| Formation of terrestrial rocks on all continents by this time | 3.5 BYA
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| Cyanobacteria first appear on Earth | 3.5 BYA
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| First fossils of living organisms formed | 3.5 BYA
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| Formation of earliest stromatolites | 3.4 BYA
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| Evolution of soft-bodied multicellular organisms | 540-635 MYA
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| Evolution of hard-bodied organisms | 540 MYA
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| Evolution of marine fish (by this time) | 400 MYA
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| Evolution of transitional species between fish and tetrapods | 375 MYA
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| Evolution of the amniotic egg | 340 MYA
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| Evolution of large amphibians | 330 MYA
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| End of Permian period; largest mass extinction in Earth’s history; formation of Pangaea II | 250 MYA
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| Evolution of dinosaurs | 230 MYA
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| Evolution of first mammals | 200-250 MYA
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| Formation of Archaeopteryx fossil | 155 MYA
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| Formation of birdlike reptilian fossils in China | 110 MYA
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| Existence of mammalian ancestor of humans, cows, whales and bats | 100 MYA
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| Apes and rodents diverge | 80 MYA
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| Cretaceous period ends/Tertiary begins (K-T boundary); extinction of dinosaurs. | 65 MYA
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| Evolution of primates | 60-80 MYA
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| Terrestrial mammals begin to evolve into dolphins/porpoises/whales | 50 MYA
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| Existence of last common ancestor of humans and chimpanzees | 6-7 MYA
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| Australopithecus evolves in Africa | 4.1 MYA
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| North and South America connect | 3 MYA
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| Most recent Ice Age begins | 2.8 MYA
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| First stone tools | 2.6 MYA
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| Evolution of homo habilis | 2.3 MYA
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| Evolution of homo erectus | 1.8 MYA
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| Evolution of homo sapiens | 200,000 years ago
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Created by:
minty_choco
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