On our CodyCross answers based website we have the solution for Epoch of Tertiary period, mammal ancestors arrived. CodyCross game includes different missions and events which update daily so you can earn tokens that are mostly needed to help with answers for challenging clues. Now let's focus on the answer you need for Epoch of Tertiary period, mammal ancestors arrived by scrolling down which is part of CodyCross Summertime Group Puzzle 5.