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Age of Mammals

   Also found in: Encyclopedia, Wikipedia, Hutchinson 0.01 sec.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.Age of MammalsAge of Mammals - approximately the last 63 million years
Cenozoic, Cenozoic era
Phanerozoic, Phanerozoic aeon, Phanerozoic eon - the period from about 5,400 million years ago until the present
Age of Man, Quaternary, Quaternary period - last 2 million years
Tertiary, Tertiary period - from 63 million to 2 million years ago


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The C-T episode is not the only major mass extinction phenomenon during the last 540-million-year period for which abundant fossil remains were found, but the fact that it led to the transition from the age of the dinosaurs to the age of mammals about 65 million years ago puzzled both scientists and the public for more than a century.
Paleoecotoxicology: the impact of chemical and physical stress in the ... by Herkovits, Jorge / Environmental Health Perspectives
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