| Clue | Source | Date |
|---|---|---|
| Regional groups of animal life | Wall Street Journal | 04 Mar 2024 |
| Regional animal groups | LA Times Daily | 23 Feb 2018 |
| Regional animal groups | ||
| Regional animal groups | ||
| Ecosystem components | New York Times | 06 Oct 2016 |
| Ecosystem components | ||
| Regional groups of animal life | Universal | 10 Sep 2015 |
| Regional groups of animal life | ||
| Zoological groups | ||
| Regional groups of animal life | ||
| Zoological studies | ||
| Regions' animals | ||
| Biologist's studies | ||
| Regional groups of animal life | ||
| Biologist's studies | ||
| Parts of ecosystems | ||
| Animal classifications | ||
| Animal groups of different regions. |