Crossword clues for the word: MIOCENE The word MIOCENE has appeared as an answer to at least 12 crossword clues on different crossword puzzles. Crossword clues for MIOCENE Showing 1 to 12 of 12 results Clue(s) A geological epoch A Tertiary epoch Division of the tertiary system. Epoch in which grazing mammals became widespread Epoch that produced grazing animals Epoch when grazing mammals flourished Epoch with big birds Geological epoch when mastodons appeared Long-ago epoch Rodents seen around old New England in geological epoch Tertiary epoch When mammals appeared