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We found 11 dictionaries with English definitions that include the word age of mammals: Click on the first link on a line below to go directly to a page where "age of mammals" is defined. General (10 matching dictionaries) Age of Mammals: Vocabulary.com [home, info] age of_mammals: Wordnik [home, info] Age of mammals, age of_mammals: Dictionary.com [home, info] Age of mammals: Wikipedia, the Free Encyclopedia [home, info] Age of mammals: Rhymezone [home, info] age of_mammals: Free Dictionary [home, info] age of_mammals: Mnemonic Dictionary [home, info] age of_mammals: WordNet 1.7 Vocabulary Helper [home, info] Age of Mammals: LookWAYup Translating Dictionary/Thesaurus [home, info] Age of Mammals: Dictionary/thesaurus [home, info] Computing (1 matching dictionary) Age of Mammals: Encyclopedia [home, info]

Quick definitions from WordNet (Age of mammals) ▸ noun:  approximately the last 63 million years