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  1. Tyrannosaurus
  2. Woolly mammoths
  3. Artwork of a Tyrannosaurus rex dinosaur
  4. T-Rex Fighting A Group Of Triceratops
  5. Evolution of man
  6. Rock art, Utah
  7. Conybeare Plesiosaurus reconstruction
  8. Living Relatives of Dinoaurs
  9. Front and side views of pelvis in chimpanzee, Australopithecus, and modern human
  10. Skeleton of a Neanderthal compared with that of a modern human
  11. 1824 Buckland's Megalosaurus limb bones
  12. Castlerigg Stone Circle; Kendal, Cumbria, England
  13. Andalgalornis steulleti, a flightless predatory bird
  14. An Archaeopteryx stalks a dragonfly on a rock
  15. Dance, Mesolithic cave art
  16. Cretaceous dinosaurs
  17. Jurassic landscape, artwork
  18. The increase in hominid cranial capacity over time
  19. A Plesiopleurodon jumps out of the water, attacking an Ornithocheirus
  20. Carboniferous insects, artwork
  21. Brachiosaurus
  22. Newgrange, County Meath, Leinster, Republic of Ireland, Europe
  23. Sabre-toothed cat on the prowl
  24. Mesolithic cave art
  25. Human evolution, artwork
  26. Europe, Ireland, Cork, Drombeg stone circle
  27. Prehistoric tree ferns, artwork
  28. Aerial view of Avebury, Wiltshire, England, UK
  29. Stages in female human evolution
  30. Neanderthals hunt a cave bear
  31. A large Meganeura dragonfly from the Carboniferous period
  32. A Group Of Argentinosaurus Dinosaurs With Ornithocheirus Flying Overhead
  33. 1770 Cuvier Maastricht Mosasaur
  34. Carboniferous landscape
  35. Archaeopteryx
  36. Full on view of a Woolly Mammoth
  37. Pterodactylus Birds Cleaning The Mouth Of A Tyrannosaurus Rex
  38. Ellipsocephalus hoffi trilobite fossils
  39. Europe, Ireland, Cork, Drombeg stone circle
  40. Early stromatolites, artwork
  41. Tarbosaurus Dinosaur, Profile View
  42. Australopithecus afarensis, artwork
  43. Deinonychus
  44. A pair of juvenile troodons in the hollow of a tree
  45. Silurian landscape, artwork
  46. Microraptor gui eating a small fish
  47. Petroglyphs on Potash Road, Moab, Utah
  48. Brachiosaurus Herd On The Move