| PLEISTOCENE | An epoch of ice ages that saw the emergence of woolly mammoth, woolly rhinoceros, musk ox, moose, and reindeer. |
| BERINGIAN | ___ Lion (Extinct animal of the Ice Age that lived in ancient Yukon) |
| HUNDREDYEARSWAR | Conflict of the Middle Ages that included the Battle of Agincourt |
| SHOW | Exhibit the extremes of woolly mammoths going all the way back (4) |
| IF | Question of the ages that reflects openness to the possibilities: "What _?" |
| ICE | Age of woolly mammoths? (3) |
| SPHERES | Ancient idea that saw the movement of the planets in the heavens as a kind of dance, the music of the ... |
| RISS | Third of the four Pleistocene ice ages of Alpine Europe, occurring between the Mindel and the Wurm (4) |
| QIVIUT | The wool of the undercoat of the Arctic musk ox (6) |
| PERMIAN | The largest extinction in Earth's history took place during this time, which lasted from about 299 million to about 252 million years ago and set the stage for the emergence of the dinosaurs. |
| OBORNE | Peter __, journalist and author of The Assault on Truth: Boris Johnson, Donald Trump and the Emergence of a New Moral Barbarism (6) |
| BURST | 'Bud ___' is the emergence of new leaves on a plant at the beginning of each growing season (5) |
| PLIOCENE | Of an epoch of the Tertiary period (8) |
| EOCENE | An epoch of the Tertiary Period, occurring from 55 to 40 million years ago (6) |
| PLEIOCENE | An epoch of the Tertiary period, beginning over 5.3 million years ago (9) |
| DETERGENT | Product that saw the end of soap flakes in the laundry and bars of soap in the kitchen sink |
| INCUBATION | ___ period measures the time between exposure to a disease and the emergence of symptoms |
| STRADDLE | High jump style which was dominant until the emergence of Dick Fosbury at the 1968 Olympics (8) |
| PETERSBURG | City in Virginia on the Appomattox River that saw the final campaign of the American Civil War (10) |
| PHILADELPHIA | City in Pennsylvania, US, that saw the signing of the Declaration of Independence in 1776 (12) |
