User:Yogi

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GorbachevChernenkoAndropovBrezhnevKhrushchevStalinLenin
  
HadeanArchaeanPaleoproterozoicMesoproterozoic

Proterozoic

PrecambrianPhanerozoic

CambrianOrdovicianSilurianDevonianCarboniferousPermianTriassicJurassicCretaceousTertiaryPaleozoicMesozoicCenozoicPhanerozoic
PaleoceneEoceneOligoceneMiocene

PleistocenePaleogeneNeogeneTertiary

Cenozoic
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