Synset:era
Part Holonyms:aeon eon
Hypernyms:geologic time geological time
Inherited Hypernyms:erageological timetimeattributeabstractionentity
Instance Hyponyms:Age of Mammals Cenozoic Cenozoic era Age of Reptiles Mesozoic Mesozoic era Paleozoic Paleozoic era
Part Meronyms:geological period period