EPOCH WHEN MAMMALS EMERGED Crossword Clue
EPOCH WHEN MAMMALS EMERGED Crossword Clue
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Crossword Puzzle Infos
The EOCENE Epoch, which lasted from 56 to 33.9 million years ago, was a period of time when mammals first emerged and diversified. It was the first epoch of the Tertiary Period in the geologic time scale and is characterized by warm temperatures and high sea levels.