| Rating | Solver | Clue |
|---|---|---|
| DODO | Extinct bird | |
| MOA | Extinct bird | |
| ROC | Extinct bird | |
| ARCHAEOPTERYX | Extinct primitive bird | |
| PALAPTERYX | A large extinct ostrichlike bird of New Zealand. | |
| DIATRYMA | An extinct eocene bird from New Mexico, larger than the ostrich. | |
| RUKH | A large bird, supposed by some to be the same as the extinct Epiornis of Madagascar. | |
| ODONTOPTERYX | An extinct Eocene bird having the jaws strongly serrated, or dentated, but destitute of true teeth. It was found near London. | |
| SOLITAIRE | A large extinct bird (Pezophaps solitaria) which formerly inhabited the islands of Mauritius and Rodrigeuz. It was larger and taller than the w... | |
| NOTORNIS | ...land. It is supposed to be now nearly or quite extinct. ... | |
| DINOSAURIA | An order of extinct mesozoic reptiles, mostly of large size (whence the name). Notwithstanding their size, they present birdlike characters in ... | |