Crossword clues for the word: MESOZOIC The word MESOZOIC has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for MESOZOIC Showing 1 to 6 of 6 results Clue(s) Era in which dinosaurs became extinct Era of the dinosaurs Era when dinosaurs were dominant Era with a big extinction Geologic era when plants and dinosaurs appeared One era