Deep Time Flashcards by Lily Libkie | Brainscape

Q

Universe form/Big Bang

A

13.7 bya

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Q

Earth formed

A

4.6 bya

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Q

Moon formed

A

4.5 bya

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Q

Oldest rocks on Earth formed/hardened

A

3.8-4.0 bya

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Q

Oldest fossils/signs of life appeared

A

3.5-3.8 bya

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Q

Appearance of Cyanobacteria

A

2.5 bya

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Q

Appearance of Eukaryotes/cell organelles

A

2.0 bya

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Q

Appearance of Algae

A

1.2 bya

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Q

“Snowball” (ice) ages

A

750-600 mya

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Q

Appearance of first animals

A

590 mya

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Q

Cambrian explosion

A

545-520 mya

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Q

Carboniferous period

A

360-330 mya

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Q

Appearance of first dinosaurs

A

230 mya

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Q

Appearance of first birds

A

150 mya

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Q

Dinosaurs’ extinction

A

65 mya

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Q

Appearance of modern humans

A

200,000 ya