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Geologic Time Scale

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Total cards: 24•Content version: v3•Public deck•Updated: 8/1/2026

Card preview (24)

#1

Front (Question)

beginning

Back (Answer)

hadeon eon

#2

Front (Question)

first rock and fossil

Back (Answer)

archean eon

#3

Front (Question)

great oxygenation

Back (Answer)

proterozoic eon

#4

Front (Question)

shell

Back (Answer)

cambrian period

#5

Front (Question)

vertebrates

Back (Answer)

ordovician period

#6

Front (Question)

vascular plants

Back (Answer)

silurian period

#7

Front (Question)

amphibians

Back (Answer)

devonian period

#8

Front (Question)

ferns

Back (Answer)

carboniferous period

#9

Front (Question)

reptiles

Back (Answer)

permian

#10

Front (Question)

dinosaurs appeared

Back (Answer)

triassic period

#11

Front (Question)

dino diversified

Back (Answer)

jurassic period

#12

Front (Question)

dinos died

Back (Answer)

cretaceous period

#13

Front (Question)

primates evolved

Back (Answer)

paleocene epoch

#14

Front (Question)

primitive horses

Back (Answer)

eocene epoch

#15

Front (Question)

apes, primates, and elephants

Back (Answer)

oligocene epoch

#16

Front (Question)

grasses become abundant

Back (Answer)

miocene epoch

#17

Front (Question)

flowering plants flourished

Back (Answer)

pliocene epoch

#18

Front (Question)

ice age and humans

Back (Answer)

pleistocene epoch

#19

Front (Question)

Human civilisation

Back (Answer)

holocene epoch

#20

Front (Question)

from cambrian to holocene, what is the eon

Back (Answer)

phanerozoic eon

#21

Front (Question)

cambrian to permian what is the era

Back (Answer)

paleozoic era

#22

Front (Question)

triassic, jurassic and cretaceous’s era

Back (Answer)

mesozoic

#23

Front (Question)

paleocene to holocene epoch era

Back (Answer)

cenozoic

#24

Front (Question)

cenozoic is divided into

Back (Answer)

tertiary and quaternary (last 2)