| Rating | Solver | Clue |
|---|---|---|
| EXPIRED | Extinct | |
| DEAD | Extinct | |
| EMUS | Extinct birds | |
| DIEOFF | Become extinct | |
| DODOES | Extinct birds | |
| MOAS | Extinct birds | |
| DADOES | Extinct birds | |
| MASTODON | Extinct mammal | |
| DODOS | Extinct birds | |
| DODO | Extinct bird | |
| DINOSAUR | Extinct creature | |
| DIEOUT | Become extinct | |
| MOA | Extinct bird | |
| ROC | Extinct bird | |
| PTERANODON | Extinct flying reptile | |
| URUS | Extinct wild cattle | |
| AUROCHS | Extinct wild oxen | |
| MAMMOTH | Large extinct elephant | |
| ARCHAEOPTERYX | Extinct primitive bird | |
| PTERODACTYL | Extinct flying reptile | |
| STEGOSAUR | Large extinct reptile | |
| GROUNDSLOTH | Large extinct mammal | |
| DEFUNCT | Dead or extinct | |
| STEGODONT | Extinct elephant like mammal | |
| INEXTINCT | Not quenched; not extinct. | |