Geologic Time Scale: Basics

Question 1

What is the supereon?

Answer 1

Precambrian

Question 2

what are the four eons following the precambrian, in order from oldest to most recent?

Answer 2

Hadean, Archean, Proterozoic, Phanerozoic

Question 3

name the three Eras within the Phanerozoic from oldest to youngest

Answer 3

Paleozoic, Mesozoic, Cenozoic

Question 4

Name the seven periods within the Paleozoic time scale from oldest to youngest

Answer 4

Cambrian, Ordovician, Silurian, Devonian, Mississippian, Pennsylvanian, Permian

Question 5

Name the three periods within the Mesozoic era, oldest to youngest

Answer 5

Triassic, Jurassic, Cretaceous

Question 6

Name the two periods in the Cenozoic era, oldest to youngest

Answer 6

Tertiary, Quaternary

Question 7

Name the five Tertiary period Epochs from oldest to newest

Answer 7

Paleocene, Eocene, Oligocene, Miocene, Pliocene

Question 8

Name the two epochs in the Quaternary period

Answer 8

Pleistocene, Holocene

Question 9

What two periods is the Tertiary Era broken up into?

Answer 9

Paleogene and Neogene

Question 10

What does Paleozoic mean?

Answer 10

ancient animals

Question 11

what does Mesozoic mean?

Answer 11

middle animals

Question 12

what does Cenozoic mean?

Answer 12

recent animals

Question 13

Cambrian Period

Answer 13

marine invertebrates emerge

Question 14

Ordovician Period

Answer 14

primitive fish form, index fossil is the trilobite Cryptolithus

Question 15

what are the two periods in the Age of Invertebrates?

Answer 15

Cambrian and Ordovician

Question 16

what two periods are in the Age of Fishes?

Answer 16

Silurian and Devonian

Question 17

Silurian Period

Answer 17

Early land animals emerge

Question 18

Devonian Period

Answer 18

First forests and amphibians emerge, index fossils: mucrospirifer and phacops

Question 19

what two periods make up the Age of Amphibians?

Answer 19

Carboniferous and Permian

Question 20

what two periods are in the Carboniferous period?

Answer 20

Mississippian and Pennsylvanian

Question 21

Mississippian Period

Answer 21

widespread shallow seas form

Question 22

Pennsylvanian Period

Answer 22

coal bearing rocks form

Question 23

Permian Period

Answer 23

earliest gymnosperms (cone bearing trees)

Question 24

Mesozoic Era

Answer 24

Age of Reptiles, dinosaurs dominate

Question 25

Triassic Period

Answer 25

first dinosaurs appear and earliest mammals

Question 26

Jurassic Period

Answer 26

earliest birds

Question 27

Cretaceous Period

Answer 27

Flowering plants (angiosperms) develop

Question 28

Cenozoic Era

Answer 28

Age of Mammals

Question 29

what are the Ages?

Answer 29

Age of Invertebrates, Fishes, Amphibians, Reptiles, Mammals, Birds

Question 30

Tertiary period

Answer 30

Apes appear

Question 31

Paleocene

Answer 31

“Age of Birds”

Question 32

Eocene

Answer 32

Age of Birds, further dev. of mammals. Giant birds rule everything

Question 33

Oligocene

Answer 33

rise of True Carnivores

Question 34

Miocene

Answer 34

Grasses and Grazing animals develop

Question 35

Pliocene

Answer 35

First modern animals

Question 36

Quaternary Period

Answer 36

Humans appear and develop. We are still in this Period.

Question 37

Pleistocene

Answer 37

first humans

Question 38

Holocene

Answer 38

current epoch

Question 39

-cene =

Answer 39

epoch