亜旧石器時代の英語

the Paleolithic Age

the stone age

the neolithic age

the bronze age

the oldest period of the Palaeozoic era

the geological age called Cretaceous

the Paleolithic era

geological age called the Archean Era

an era in archaeology called the Old Stone Age

a geological period called the Paleozoic era

a period of time called the Mesolithic period

the geological age called Carboniferous

the feudal times

the bronze age

a time period called {the middle-old stone age}

the Middle Ages

a geological era named Archaeozoic era

a knife from the palaeolithic period

a prehistoric period called Iron Age

the Neolithic period, the height of prosperity of the Stone Age

an era named {Ancient Mesopotamia}

time immemorial

the Golden Age

the period following the Bronze Age

the Iron Age

geologic eras

human beings who appeared just following the Old Stone Age

the ethnography of paleolithic humans

a geological period called Ordovician

a period of human history called the Bronze Age