Across
- 1. median process on the front part of the neural arch of the vertebrae of most snakes and some lizards
- 4. supporting the muscle fibers of the myomeres
- 6. one of the transverse processes that project from the centrum of each vertebra of many lower vertebrates
- 7. interarticular cartilage or bone between the sternum and each clavicle in many mammals
- 9. one of a pair of dorsal and lateral elements of the centrum of the vertebra of the fish
- 10. set of twelve bones which form the protective 'cage'
- 11. condition in which vertebral centra and spines are single-pieced or fused
- 15. continuous rod of fiburus connective tissue
- 16. amphibians that were well-adapted to life on land,
- 20. second cervical vertebra
- 21. transverse process of a vertebra that is an outgrowth of the neural arch on the dorsal side
- 25. meaning "drawn-out face" because most of its skull was in front of its eyes
- 26. include frogs, toads, salamanders, and newts
- 27. dermal bones found in the ventral body wall of modern crocodilian and Sphenodon species
- 29. They follow the oldest known living lineage of Sarcopterygii
- 30. first cervical (neck) vertebra
- 31. adjustment for vertical tilt
Down
- 2. australian lung fish
- 3. diverse taxon of reptiliomorph tetrapods
- 5. ventral rib head
- 8. diverse order of small to giant tetrapods—often considered primitive amphibians
- 12. plural of centrum, the central part of a vertebra.
- 13. interlocking bones that form the spinal column
- 14. a process of projection or outgrowth of tissue from a larger body
- 17. having an egg equipped with an amnion
- 18. having two heads
- 19. four-limbed animals
- 22. also known as dipnotetrapodomorphs
- 23. fossa on the posterior median part of the neural arch of a vertebra (as of a snake)
- 24. two legs
- 28. element of the vertebral column alternating with the true centra of the vertebrae in several different classes of vertebrates