Cenozoic era

Từ điển WordNet v3.1 - WordNet Dictionary

noun

approximately the last 63 million years
• Syn:
Cenozoic, Age of Mammals
• Instance Hypernyms:
era, geological era
• Part Holonyms:
Phanerozoic, Phanerozoic eon, Phanerozoic aeon
• Part Meronyms:
Quaternary, Quaternary period, Age of Man, Tertiary, Tertiary period