Derico
Across
- 2. third level of classification
- 3. first level of classification
- 5. to put in group
- 7. flat thin body
- 8. seventh level of classification
- 10. sixth level of classification
- 11. no back bone
- 14. second level of classification
- 15. hollow body
Down
- 1. grouped
- 4. fourth level of classification
- 6. has a backbone
- 9. fifth level of classification
- 12. moist skin
- 13. have wings