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Definition of Age of mammals
1. Noun. Approximately the last 63 million years.
Exact synonyms: Cenozoic, Cenozoic Era
Group relationships: Phanerozoic, Phanerozoic Aeon, Phanerozoic Eon
Terms within: Age Of Man, Quaternary, Quaternary Period, Tertiary, Tertiary Period
Generic synonyms: Era, Geological Era
Group relationships: Phanerozoic, Phanerozoic Aeon, Phanerozoic Eon
Terms within: Age Of Man, Quaternary, Quaternary Period, Tertiary, Tertiary Period
Generic synonyms: Era, Geological Era