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Across 3. another name of shell of turtle 6. bony fish have these glands to make them slippery 11. number of classes of subphylum vertebrata 12. salamanders and newts can have this type of glands to ward off predators 14. wishbone in birds 16. order of lizards and snakes 17. organ in birds that grinds food 18. one of few places where lizards and snakes are not found 21. adaptation of bird bones 22. Chondrichthyes have a skeleton made of this material 25. sharks must remain in constant motion because they lack this organ 30. term for having a dark upper surface and lighter lower surface 32. examples are coelancanth and lungfish 33. crocodiles may lay eggs in these structures 34. bony fish reinforce their skeleton with these 35. caecillians detect prey with chemosensory ____ 38. birds have a very efficient ____ system so they can fly 39. order that has 4 limbs, elongated bodies, and cutaneous respiration 44. flexible skeletal support rod 47. smallest shark 50. members of Order Anura are these type of eaters 52. largest shark 53. order of the caecillians 55. amphibians have this many chambers in their heart 56. type of shell reptile eggs have 58. reptiles have these on their toes, if they have toes 59. Agnatha fish have seven of these

Down 1. frogs and toads have legs adapted for this 2. caecillians lack these 4. their name means "double life" in Greek 5. Chondrichthyes have special receptors that can detect these 7. fins that keep fish from rolling over 8. fin that propels fish forward 9. besides lungs and gills, amphibians can also breath this way 10. sitting in the sun to absorb the heat 13. gill covering 15. Chondrichthyes have a tough skin covered with these sharp teeth 16. Agnatha fish lack this digestive organ 19. all marine, burrow on ocean floor 20. order of turtles and tortoises 23. sharks are these kind of eaters 24. class of ancient fish 26. males produce these to attract females 27. reptile with a wide flat head and round noses 28. internal skeleton 29. only place the 2 living species of tuatara are found 31. belongs to order sphenodontia 36. order of reptiles that will actually care for their young 37. slits in this body part that let water enter and exit 40. symmetry of Chordata 41. subphylum of Chordates that has a backbone 42. largest class of vertebrates 43. found in marine and freshwater, some are parasitic 45. member of order testudines with a dome shaped shell 46. birds have a ___ loop circulation 48. this type of skull means it is modified to move 49. flat-bodied fish found in warm seas 51. examples are salmon, eels, cod, halibut, sea horses 54. beak of the turtle 57. this terms means "lacks scales"