問題一覧
1
Period of Paleocene Epoch
Tertiary Period
2
Era of Ordovician Period
Paleozoic Era
3
Era of Tertiary Period
Cenozoic Era
4
Eon of Mesozoic Era
Phanerozoic Eon
5
Era of Jurassic Period
Mesozoic Era
6
Period of Pleistocene Epoch
Quaternary Period
7
Eon of Paleozoic Era
Phanerozoic Eon
8
Era of Devonian Period
Paleozoic Era
9
Era of Silurian Period
Paleozoic Era
10
Eon of Cenozoic Era
Phanerozoic Eon
11
Era of Triassic Period
Mesozoic Era
12
Period of Oligocene Epoch
Tertiary Period
13
Period of Holocene Epoch
Quaternary Period
14
Period of Pliocene Epoch
Tertiary Period
15
Era of Proterozoic and Archean Periods
Precambrian Era
16
Period of Eocene Epoch
Tertiary Period
17
Era of Carboniferous Period
Paleozoic Era
18
Era of Permian Period
Paleozoic Era
19
Era of Cambrian Period
Paleozoic Era
20
Era of Quaternary Period
Cenozoic Era
21
Era of Cretaceous Period
Mesozoic Era
22
Period of Miocene Epoch
Tertiary Period