Across
- 2. Used to designate any pad of tissue.
- 3. Descibed more fully as we meet them.
- 4. Reverse shape and convex anteriorly.
- 6. Cells stream out.
- 7. First components of the vertebra to appear.
- 9. Development in some fishes.
- 14. Embryonic notochord.
- 15. Supportive struts.
- 17. Bear saddle-shaped.
- 21. Found in some early tetrapods.
- 22. Successively into a chain of vertebrae.
- 24. Distinctive type of vertebra.
- 25. Pad between centra.
- 26. Ribs of tetrapods.
- 28. Twisting tetrapods.
- 32. Centra with flat ends.
- 33. Abdominal ribs.
- 34. Midventral skeletal.
- 36. Chordal center.
- 37. Formation of the chondrocranium.
- 38. Large eyes and nasal capsules.
- 39. Ribs that meet ventrally with the sternum.
- 40. Paired ventrolateral processes.
Down
- 1. Consist of a discrete.
- 5. Ventral derivative behind the jaw.
- 8. Represent a highly modified synapsid pattern.
- 10. Enters the tail and turns down.
- 11. Floating ribs.
- 12. Each surface is concave.
- 13. More or less continous coat.
- 16. Enlarged cluster.
- 18. Serve as the major supportive element.
- 19. Support the gills and attachment for respiratory muscles.
- 20. Few small cartilaginous elements
- 23. Receive vertebrae from the anthracosaur.
- 27. Only meckel's cartilage is in.
- 29. Secure muscle attachment.
- 30. Early labyrithtodont vertebrae.
- 31. Continous rod of fibrous.
- 35. Composed of heavy plates.