Across
- 6. Derived set of skeletal elements posterior to sternum, also called abdominal ribs
- 7. Massive flight muscle that arise from large sternum that bears prominent ventral keel in flying birds
- 11. Swedish palaeontologist that proposed composite theory
- 12. Arriving streams of cells initially form enlarged clusters that are arranged serially along notochord
- 13. Vertebral condition of tetrapods wherein all vertebral elements in a segment are fused into a single piece
- 16. Centra with flat ends suited to receive and distribute compressive forces within the vertebral column
- 18. includes vertebral column, limbs, girdles and ribsand shells
- 21. Have a prominent element called hyoman dibula
- 23. Joining the rims of adjacent centra
- 27. The use of rapid, projected and sticky tongue to capture prey in most amphibians and lizards
- 30. Provide sites for secure muscle attachment, help suspend the body, forms ribcage and sometimes serve as accessory breathing devices
- 31. Consist of ribs and sternal elements that embrace the viscera
- 34. Found only in mammals, they reside between successive surfaces of adjacent centra
- 35. Dermal plates of the head that were thick and tightly joined into a unit
- 36. Supports the brain and is formed of endochondrial bone or cartilage or both
- 39. Local mesenchyme condenses at the level of the myosepta these condensations become cartilaginous anlagen called_______.
- 40. Ribs that meet ventrally with the sternum
Down
- 1. Bones that expands into large swollen capsule that houses the middle ear ossicle in most eutherians
- 2. Projections that extend posteriorly from proximal rib segments, offer sites of attachment for respiratory and shoulder muscles
- 3. Process of chewing the food before swallowing it
- 4. Method of capturing prey, by which the animal rapidly grasps the prey with its jaw
- 5. Generally applies to any process extending from the centrum or the neural arch
- 8. Centra that is a bear saddle-shaped articular surfaces at the both ends, common in turtles that retract their necks and in cervical vertebrae of birds
- 9. Movement between the upper jaw and the braincase about joints between them
- 10. Composite bony plate forming the floor of the shell within turtles
- 14. Offers site of origin for chest muscles
- 15. If a joint passes through dermatocranium behind the eye, the skull exhibits ________.
- 17. Most ancient part of skull
- 19. Ribs that have two heads that joints with the vertebrae
- 20. Method of capturing pray, a sudden vacuum to gulp in water carrying the intended food
- 22. Branchial arches that supports the mouth
- 24. Functional arch of jaw, the largest and most anterior series of arches
- 25. It was used as the major criterion to define tetrapod taxa
- 26. Only two sets of the teeth erupt during the life time of a mammal (milk teeth and permanent teeth)
- 28. Chain of cartilaginous elements
- 29. Also known as ventral rib head
- 32. Fused cranial components surrounding and encasing the brain
- 33. Equivalent term of chondrocranium
- 37. An unpaired medial dermal bone in the teeth of fishes and lower tetrapods
- 38. In suction feeding in water it is a flow where excess water entering the mouth must reverse its flow to exit via the mouth due to absence of gill slit