classification and variation

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Across
  1. 4. long thin bodies divided into segments
  2. 6. has wings and fangs
  3. 9. opposite of vertebrates
  4. 10. has hair and does lay eggs
  5. 12. have feathers and lays eggs
  6. 13. have jointed legs
  7. 15. scales and has soft shelled eggs
Down
  1. 1. thin and does not have segments
  2. 2. has fins and lays eggs in water
  3. 3. smooth skin and lays eggs in water
  4. 5. long snout
  5. 7. has an inside skeleton of cartilage
  6. 8. has flippers with fins
  7. 11. Latin for soft or what a octopus is
  8. 14. chisel teeth for gnawing