| Answer | Crossword Clue |
|---|---|
| cenozoic | relating to the most recent geologic era |
| quaternary | Of, relating to, or denoting the most recent period in the Cenozoic era, following the Tertiary period and comprising the Pleistocene and Holocene epochs (and thus including the present) |
| holocene | relating to the second and most recent epoch of the Quaternary period |
