Important Times Flashcards
1
Q
Age of the universe
A
13-14 BYA
2
Q
13-14 BYA
A
Age of the Universe
3
Q
Age of the Earth
A
4.6 BYA
4
Q
4.6 BYA
A
Age of the Earth
5
Q
Age of the Moon
A
4.5 BYA
6
Q
4.5 BYA
A
Age of the Moon
7
Q
First Organisms
A
3.8 BYA
8
Q
3.8 BYA
A
First Organisms
9
Q
Earliest Land Fossils
A
2.5 BYA
10
Q
2.5 BYA
A
Earliest Land Fossils
11
Q
Great Oxygenation Event
A
2.4 BYA
12
Q
2.4 BYA
A
Great Oxygenation Event
13
Q
First Multicellular Organisms
A
2.1 BYA
14
Q
2.1 BYA
A
First Multicellular Organisms
15
Q
First Eukaryotes
A
1.8 BYA
16
Q
1.8 BYA
A
First Eukaryotes
17
Q
First Algae
A
1.6 BYA
18
Q
1.6 BYA
A
First Algae
19
Q
First sponges (animals)
A
650 MYA
20
Q
650 MYA
A
First sponges (animals)
21
Q
Oldest Chordates
A
520 MYA
22
Q
520 MYA
A
Oldest Chordates
