Geological Time Flashcards
0
Q
Paleozoic
A
Oldes era of the Phanerozoic eon. 6.4% of earths history Age of fish 542-251 mya Paleo= old/acient
1
Q
Mass extinction
A
Extintion of many species on earth within a short period of time.
Climate change/ geological process
2
Q
Mesozoic
A
Middle era of Phanerozoic eon. 4.1% Age of reptiles 251-66 mya Meso= middle
3
Q
Cenozoic
A
Recent life
66-present
Age of mammals- 1.5%
4
Q
Inland sea
A
Body of water formed when ocean water floods continents
5
Q
Pangaea
A
Supercontinent of all continents
6
Q
Ice age
A
Time when a large proportion of earths surface is covered by glaciers
7
Q
Single-cell org.
A
One celled thingys like sponges and jellyfish.
8
Q
Mega-mammal
A
Large mammals of he cenozoic era
9
Q
Land bridges
A
Connects 2 seperate continents that were previously seperated
10
Q
Time divisions
A
Eon-era-period-epoch
