| Clue | Source | Date |
|---|---|---|
| Expert in biological classification | ||
| Expert whose work is classified? (10) | ||
| Returning black and white cab crosses street for class expert | The Times Cryptic | 13 Jun 2024 |
| Linnaeus maybe wrong in principle – nothing to prevent one seeing clearly | ||
| Class expert possibly needs single to return in hired vehicle on street | The Telegraph Toughie | 13 Mar 2020 |
| Classifier of living things | ||
| Classification expert |