Geological Time Scale

Question 1

What periods are in the Cenozoic era?

Answer 1

Tertiary and Quaternary

Question 2

What periods are in the Paleozoic era?

Answer 2

Permian

Carboniferous (2): Pennsylvanin and the Mississippian

Devonian

Silurian

Ordovician

Cambrian

Question 3

What periods are in the Mesozoic era?

Answer 3

Cretaceous
Jurassic
Triassic

Question 4

What periods are in the eon era Precambrian?

Answer 4

Proterozoic
Archean
Hadean

Question 5

What are the epochs in Tertiary period?

Answer 5

Holocene
Pleistocene
Pliocene
Miocene
Oligocene
Eocene
Paleocene

Question 6

Cenozoic is the age of what?

Answer 6

Mammals

Homo sapiens developed 200,000 years ago

Question 7

540 MYBP to Now

Answer 7

Phanerozoic

Question 8

65-250 MYBP

Answer 8

Mesozoic

Question 9

Mesozoic is the age of …?

Answer 9

Reptiles. Dinosaurs and kin were dominant

Question 10

What continent(s) was during the Mesozoic era?

Answer 10

Laurasia (North)

Gondwana (South)

Question 11

250 to 540 MYBP

Answer 11

Paleozoic era

Question 12

Which era was Pangea in?

Answer 12

Paleozoic

Question 13

Which era had the first animals?

Answer 13

Proterozoic

Question 14

Paleozoic is known for what?

Answer 14

The origin of many animals/diversification
AND
Invasions onto land and air

Question 15

Archean period epoch had what type of species?

Answer 15

Stromatolites (blue-green algae)

Question 16

Rate of extinction is 60%

Answer 16

Ordovician/Silurian Extinction

Question 17

47% of species died

Answer 17

Cretaceous/Tertiary (K/T) extinction

Question 18

List the causes of the Cretaceous/Tertiary (K/T) extinction

Answer 18

Bolide impact
Vulcanism
Disease

Question 19

When India hit Asia, Volcanism with Bolide co-occurred, causing what?

Answer 19

The Cretaceous/Tertiary extinction (K/T)

Question 20

Gondwana and Laurasia breaking up caused what?

Answer 20

Triassic/Jurassic extinction

Question 21

Which extinction has no known cause?

Answer 21

Devonian/Carboniferous extinctino

Question 22

70% species extinction and overall

96% of marine life extinct

Answer 22

Permian/Triassic Extinction

Question 23

45% species extinction rate

Answer 23

Triassic/Jurassic extinction

Question 24

What caused the Ordovician/Silurian extinction?

Answer 24

Pangea moved over southern pole and caused the most severe ice age of the Phanerozoic eon

Question 25

Typical conditions needed for fossilization

Answer 25

Hard parts (I.e. hard skeletons) Rapid burial Anoxic conditions

Question 26

Ichnofossils mean

Answer 26

Impressions/trace of species like footprints or a jellyfish laying down in a bed of silt

Question 27

Mineral replacement means

Answer 27

Original material gets replaced by various other minerals.

Question 28

Which type of fossils are found in the Mesozoic era?

Answer 28

Mineral replacements

Question 29

Carbonized forms means

Answer 29

Carbon is still present in the fossil, black in appearance.

Question 30

What type of fossils are found in the Cenozoic era?

Answer 30

Carbonized forms

Question 31

The Cambrian Explosion

Answer 31

Era where a massive amount of life developed, possibly due to the key innovation of the mesoderm