geologiska perioder
preferred label: geological eras @en
preferred label: geologiset kaudet @fi
type: Concept
related: tidsperioder

gamla tiden
preferred label: ancient times @en
preferred label: vanha aika @fi
type: Concept
broader: tidsperioder

nya tiden
preferred label: early modern era (1500-1788) @en
preferred label: uusi aika @fi
type: Concept
broader: tidsperioder

tidsperioder
preferred label: ages @en
preferred label: aikakaudet @fi
narrower: gamla tiden
narrower: nya tiden
narrower: förhistoria
narrower: medeltiden
broader: samhällelig tidsperiod
in scheme: conceptscheme
alternative label: historian aikakaudet @fi
alternative label: historiska tidsåldrar
type: Concept
related: geologiska perioder
related: klimatperioder

medeltiden
preferred label: middle ages @en
preferred label: keskiaika @fi
type: Concept
broader: tidsperioder

samhällelig tidsperiod
preferred label: societal period of time @en
preferred label: yhteiskunnallinen ajanjakso @fi
type: Concept
narrower: tidsperioder

klimatperioder
preferred label: climatic periods @en
preferred label: ilmastokaudet @fi
type: Concept
related: tidsperioder

förhistoria
preferred label: prehistory @en
preferred label: esihistoria @fi
type: Concept
broader: tidsperioder