| Clue | Source | Date |
|---|---|---|
| Tail bone | The Guardian Quick | 05 May 2022 |
| Bone at base of the spine | The Times Concise | 04 Feb 2020 |
| Tailbone | Newsday | 10 Nov 2019 |
| Tail bone | The Telegraph Quick | 21 Jan 2018 |
| Tail bone | The Guardian Quick | 14 Apr 2017 |
| Bone below the sacrum | LA Times Daily | 26 Jan 2017 |
| Bone below the sacrum | ||
| Human tail? | The Guardian Quick | 25 Jun 2016 |
| Remnant of a vestigial tail | Newsday | 21 May 2016 |
| Tailbone | ||
| Sacrum neighbor | ||
| Tailbone | ||
| Tip of the vertebral column | ||
| Lower part of a column | ||
| Tailbone | ||
| Tailbone | ||
| Tailbone |