Bio 172 -Gen Timeline Flashcards

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General Timeline

Biology

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17 Terms

1
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3.9 bybp

oldest fossil prokaryotes

2
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2.0 bybp

aerobic eukaryotic organisms

3
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750 mybp

first Metazoan

4
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500 mybp

all animal phylum

5
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500 mybp -

1st vertebrates

6
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450 mybp

Chondrichthyes (cartilaginous fish)

7
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420 mybp

vascular plants (cyclum and phyleum)

8
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400 mybp -

bony fishes

9
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360 mybp

gymnosperms

10
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350 mybp

amphibians (semi-terrestrial)

11
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300 mybp

1st terrestrial vertebrates

12
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300 mybp -

1st Amniotic divergence (mammals)

13
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280 mybp

2nd Amniotic divergence (turtles)

14
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230 mybp

3rd Amniotic Divergence: 1st thecodont

15
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175 mybp

feathered dinos (caudipyerex)

16
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150 mybp

archeopteryx

17
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125 mybp

modern bird