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Flashcards in Earth Time Deck (28):
1

Earth age

4.6 bya

2

Biggest division of time

Eon*

3

Earliest rocks

3.8 bya Precambrian

4

Cambrian explosion

Started Paleozoic period

5

Earliest plants

Silurian

6

Bony fish
Earliest amphibians and ammonites

Devonian

7

Permian extinction

245-45 mya

8

Dinosaurs extinct

85 Mya

9

First prokaryote cell

3.5 bya

10

Explosions and extinctions

Explosions- life developers
Extinction- life dies

11

Earlier fish

Ordovician

12

Earliest terrestrial Animals

Silurian

13

Earliest dinosaurs

Triassic

14

Dinosaurs flourish

Jurassic

15

Dinosaur extinction

Cretaceous

16

Humans

Quaternary

17

Eras
Latest to recent

Precambrian
Paleozoic
Mesozoic
Cenozoic

18

Paleozoic periods
Latest to earliest

Cambrian
Ordovician
Silurian
Devonian
Carboniferous
Permian

19

Mesozoic periods
Oldest to recent

Triassic
Jurassic
Cretaceous

20

Cenozoic periods
Oldest to recent

Tertiary
Quaternary

21

Cenozoic means

Recent life

22

Mesozoic means

Middle life

23

Paleozoic means

Ancient life

24

Precambrian means

Pre old stuff

25

Cenozoic means

Recent life

26

Mesozoic means

Middle life

27

Paleozoic means

Ancient life

28

Precambrian means

Pre old stuff