Across
- 8. The ventral rib head
- 10. Provides additional surface for muscle attachment
- 12. The long, continous rod of fibrous connective tissue
- 17. Evolved directly from rhipidistians
- 18. Hemal arches below expand into supportive struts
- 19. Composite bony plate forming the floor of the shell
- 21. Ribs and sternal elements that embrace the viscera
- 23. Concave anteriorly and convex posteriorly
- 24. Attached to the vertebral column in complete ways
- 27. the dorsal head
- 28. process on the neural arch
- 30. Derived from the embryonic notochord
- 32. Midventral skeletal structure
- 35. Generally applies to any process extending from the centrum
- 38. The point between piers where weight transfer changes
- 39. These arriving streams of cells initially form enlarged clusters
- 40. Articulate with each other but not with the sternum
Down
- 1. These condensatios become cartilaginous an larger called
- 2. Hans Gadow called these paired cartilages
- 3. Other name of ventral rib head
- 4. Are between the thorax and the hips
- 5. Paired ventrolateral processes
- 6. consists of arches and centra
- 7. To receive the rib
- 9. Form paddles
- 10. Vertebrates there is great variation structure
- 11. Phylogenetically receive their vertebrae from the anthracosaur line
- 13. Struts that sometimes fuse
- 14. The vertebral column is differentiated into two regions: An Anterior
- 15. Seperate but approximately equal-sized
- 16. Are named force their distinctive type of holospondylous vertebra
- 20. found in some rhipidistians and some tetrapods
- 22. centra with flat ends
- 25. One of the most interesting pieces of personal body engineering
- 26. Lack of sternum
- 29. The reverse shape
- 31. Form at points where the myopsepta meet the walls of the coelomic cavity
- 33. Other general vertebral condition of tetrapods
- 34. The first cervical vertebra
- 36. Ribs of primitive tetrapods
- 37. Ribs that meet ventrally with the sternum