Morphology and Paleontology

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Across
  1. 2. opposable ______ help primates and humans use tools
  2. 7. reptile that lives in swamps
  3. 8. what makes up a shark's skeleton
  4. 11. term for a land environment
  5. 15. scientist that studies fossils
  6. 18. the other leg bone of mammals and many animals
  7. 19. extinct bird that starts with an e
  8. 20. species adapt to their ____________
  9. 22. organisms ______ to their environment
  10. 25. plant eater
Down
  1. 1. meat and plant eater
  2. 3. another term for the hand and finger bones of animals
  3. 4. meat eater
  4. 5. blue mammal that lives in the ocean
  5. 6. remains of organisms that died millions of years ago
  6. 9. a term for a water environment
  7. 10. helps fish breathe in water
  8. 12. one of the leg bones of mammals and many animals
  9. 13. bird that can't fly
  10. 14. what would be a reason for a hole in the top of a skull
  11. 16. who organisms are descended from
  12. 17. tree used in simulations on Amplify
  13. 21. helps animals breathe on land
  14. 23. scientists use comparative _______ to study relatedness between species
  15. 24. the structure that connects the back legs and torso/body