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  1. Earth's magnetic field protection
  2. Early stromatolites, artwork
  3. Durer's world map, 1515
  4. Dissected eye, 1844 artwork
  5. Dilophosaurus
  6. Detail of 16th century map of Liguria
  7. Detail of 16th century map of Liguria
  8. Dendera zodiac from the Temple of Hathor
  9. Daimler automobile, 19th century
  10. Cretaceous tree ferns, artwork
  11. Cretaceous dinosaurs
  12. Columbine (Aquilegia 'Blue Star')
  13. City ambulance, 19th century
  14. Cervical spinal nerves, 1844 artwork
  15. Cervical spinal nerves, 1844 artwork
  16. Carboniferous landscape
  17. Carboniferous insects, artwork
  18. Cambrian invertebrate, artwork
  19. Brachiosaurus
  20. Brachiosaurus
  21. Artwork showing Chicxulub impact crater, Yucatan
  22. Allosaurus
  23. Artwork of the pterosaur, Pteranodon sp
  24. Artwork of Stegosaurus dinosaur, Stegosaurus sp
  25. Artwork of Caudipteryx sp., a bird-like dinosaur
  26. Artwork of an Allosaurus dinosaur, Allosaurus sp
  27. Artwork of a Tyrannosaurus rex dinosaur
  28. Artwork of a Tyrannosaurus rex dinosaur
  29. Artwork of a plesiosaur dinosaur hunting
  30. Artwork of a Maiasaura dinosaur
  31. Artist's impression of Tyrannosaurus rex
  32. Artist's impression of Tyrannosaurus
  33. Brain and spinal cord, 1844 artwork
  34. Aurora observations, 1839
  35. Ader's flying machine, 19th century
  36. 16th century map of Sardinia cartouche
  37. Palm in Bamboo IV
  38. Palm in Bamboo III
  39. Palm in Bamboo II
  40. Palm in Bamboo I
  41. Female human head with brain
  42. Egyptian and Assyrian counting systems
  43. Dragonflies, 17th century artwork
  44. DNA replication, artwork
  45. DNA molecule, artwork
  46. DNA assembly, artwork
  47. Distillation, 16th century woodcut
  48. Diphtheria treatment, artwork