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

period of time in natural history
preferred label: luonnontieteellinen ajanjakso @fi
type: Concept
narrower: klimatperioder

tidsperioder
preferred label: ages @en
preferred label: aikakaudet @fi
type: Concept
related: klimatperioder

istider
preferred label: ice ages @en
preferred label: jääkaudet @fi
type: Concept
related: klimatperioder

klimatförändringar
preferred label: climatic changes @en
preferred label: ilmastonmuutokset @fi
type: Concept
related: klimatperioder

klimatperioder
related: tidsperioder
related: istider
related: geologiska perioder
related: klimatförändringar
preferred label: climatic periods @en
preferred label: ilmastokaudet @fi
broader: period of time in natural history
in scheme: conceptscheme
type: Concept
scope note: Namnen på olika klimatperioder kan användas som ämnesord, t.ex. boreal tid
scope note: Ilmastokausien nimiä voi käyttää asiasanoina, esim. boreaalikausi