COMPARATIVE ANATOMY

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Across
  1. 1. usually present and well developed in males, produces territorial and courtship vocalization.
  2. 3. fishes without jaws.
  3. 5. were straight, rather than V- shaped.
  4. 11. drawn under the body to become the major weight-bearing and locomotor appendages.
  5. 13. the __________ help hold and position the fish within currents.
  6. 14. the largest of the eutherian groups.
  7. 15. aquatic salamanders belonging to the family Salamandridae
  8. 17. pull themselves into their mother pouch; no male __________ has a pouch.
  9. 22. __________ or Caudata, contains the salamanders
  10. 24. "shell" and "skin".
  11. 26. a monophyletic lineage producing many various forms.
  12. 30. frogs and toads make up the __________
  13. 33. the advance bony fishes (the sleek shape)
  14. 35. amphibians, repltiles, birds, and mammals (literally means four footed).
  15. 36. __________ is another ostracorderm group.
  16. 37. The anterior clustering of specialized sensory organs.
  17. 38. arboreal or had ancestors who were, and they posses grasping fingers and toes tipped by nails.
Down
  1. 2. those without an amnion.
  2. 4. include mostly carnivorous species.
  3. 6. inlcludes familiar forms such as crocodiles, dinosaur and birds.
  4. 7. "cartilage" and "fish" (include the sharks)
  5. 8. The earliest vertebrates.
  6. 9. Another evolving key vertebrate innovation.
  7. 10. "small" and "lizard" (were not lizards, but lepospondyls)
  8. 12. Series of separate bones or cartilage blocks. firmly joined as a backbone that defines the major body axis.
  9. 16. embryos of amniotes possess a delicate, transparent, saclike membrane.
  10. 18. birds with talons, specialized feet used to stun or grasp prey.
  11. 19. "plate" and "skin"
  12. 20. solid cylindrical body that often encloses the notochord.
  13. 21. living reptiles have __________
  14. 23. hulking and pig-sized.
  15. 24. early vertebrate fossils were recovered from what appeared to be freshwater or delta deposits.
  16. 25. vertebtrates with jaws
  17. 27. reptiles diagnosed by skulls without temporal fenestrae.
  18. 28. inlcude the bony fishes; the most diverse of any vertebrate.
  19. 29. unique in the way the digits articulate with the ankle bones.
  20. 31. all living agnathans __________ bone and possess 4 single nostril.
  21. 32. some fossil agnathans.
  22. 34. first name of the Physiologist argued that vertebrate kidney worked well to rid the body of any osmotic influx of excess water.