Approximately the last 63 million years. Synonyms: Age of Mammals, Cenozoic era.
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"Cenozoic" Quotes from Famous Books ![]() ![]() — The Galaxy - Vol. 23, No. 1 • Various ![]() ![]() — Scientific American Supplement, No. 384, May 12, 1883 • Various ![]() ![]() — The Economic Aspect of Geology • C. K. Leith ![]() ![]() — The Golden Fleece • Julian Hawthorne |
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