Age of Mammals
Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to Age of Mammals: Age of Reptiles
Switch to new thesaurus
|Noun||1.||Age of Mammals - approximately the last 63 million years|
Phanerozoic, Phanerozoic aeon, Phanerozoic eon - the period from about 5,400 million years ago until the present
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.