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  1. <attn> GEOLOGICAL TIME TIMELINE</ATTN>
  2.  
  3. <article>
  4. <timeline type=line>
  5. <start><date>700000000 BC</date></start>
  6. <end><date>1 BC</date></end>
  7. <timebar fid="scale004">
  8.  
  9. <range>
  10. <from>700000000 BC</from><to>550000001 BC</to>
  11. <slider>Precambrian Per.</slider>
  12. </range>
  13.  
  14. <range>
  15. <from>550000000 BC</from><to>510000001 BC</to>
  16. <slider>Cambrian Period</slider>
  17. </range>
  18.  
  19. <range>
  20. <from>510000001 BC</from><to>435000001 BC</to>
  21. <slider>Ordovician Period</slider>
  22. </range>
  23.  
  24. <range>
  25. <from>435000000 BC</from><to>412000001 BC</to>
  26. <slider>Silurian Period</slider>
  27. </range>
  28.  
  29. <range>
  30. <from>412000000 BC</from><to>355000001 BC</to>
  31. <slider>Devonian Period</slider>
  32. </range>
  33.  
  34. <range>
  35. <from>355000000 BC</from><to>290000001 BC</to>
  36. <slider>Carboniferous Period</slider>
  37. </range>
  38.  
  39. <range>
  40. <from>290000000 BC</from><to>250000001 BC</to>
  41. <slider>Permian Period</slider>
  42. </range>
  43.  
  44. <range>
  45. <from>250000000 BC</from><to>205000001 BC</to>
  46. <slider>Triassic Period</slider>
  47. </range>
  48.  
  49.  
  50. <range>
  51. <from>205000000 BC</from><to>135000001 BC</to>
  52. <slider>Jurassic Period</slider>
  53. </range>
  54.  
  55. <range>
  56. <from>135000000 BC</from><to>66000001 BC</to>
  57. <slider>Cretaceous Period</slider>
  58. </range>
  59.  
  60. <range>
  61. <from>66000000 BC</from><to>2000000 BC</to>
  62. <slider>Tertiary Period</slider>
  63. </range>
  64.  
  65. <range>
  66. <from>2000000 BC</from><to>1 BC</to>
  67. <slider>Quaternary Period</slider>
  68. </range>
  69.  
  70.  
  71.  
  72. <event>
  73. <vague></vague>
  74. <from>700000000 BC</from><to>550000001 BC</to>
  75. <p>First jellyfish and worms. Algae</p>
  76. </event>
  77.  
  78. <event>
  79. <vague></vague>
  80. <from>550000000 BC</from><to>510000001 BC</to>
  81. <p>Trilobites. First shellfish</p>
  82. </event>
  83.  
  84.  
  85. <event>
  86. <vague></vague>
  87. <from>510000001 BC</from><to>435000001 BC</to>
  88. <p>Animals without backbones</p>
  89. </event>
  90.  
  91.  
  92. <event>
  93. <vague></vague>
  94. <from>435000000 BC</from><to>412000001 BC</to>
  95. <p>First land plants</p>
  96. </event>
  97.  
  98.  
  99. <event>
  100. <vague></vague>
  101. <from>412000000 BC</from><to>355000001 BC</to>
  102. <p>Caledonian earth movements. Ferns and fish</p>
  103. </event>
  104.  
  105.  
  106. <event>
  107. <vague></vague>
  108. <from>355000000 BC</from><to>290000001 BC</to>
  109. <p>Great coal swamp forests</p>
  110. </event>
  111.  
  112.  
  113. <event>
  114. <vague></vague>
  115. <from>290000000 BC</from><to>250000001 BC</to>
  116. <p>Continents move together to form the giant landmass Pangaea</p>
  117. </event>
  118.  
  119.  
  120. <event>
  121. <vague></vague>
  122. <from>250000000 BC</from><to>205000001 BC</to>
  123. <p>First dinosaurs and mammals</p>
  124. </event>
  125.  
  126.  
  127. <event>
  128. <vague></vague>
  129. <from>205000000 BC</from><to>135000001 BC</to>
  130. <p>Many dinosaurs</p>
  131. </event>
  132.  
  133.  
  134. <event>
  135. <vague></vague>
  136. <from>135000000 BC</from><to>66000001 BC</to>
  137. <p>Dinosaurs die out. Chalk deposited</p>
  138. </event>
  139.  
  140.  
  141. <event>
  142. <vague></vague>
  143. <from>66000000 BC</from><to>2000000 BC</to>
  144. <p>Many mammals appear. Alpine earth movements create  Alps, Himalayas and Rockies</p>
  145. </event>
  146.  
  147.  
  148. <event>
  149. <vague></vague>
  150. <from>2000000 BC</from><to>1 BC</to>
  151. <p>The Great Ice Age. Modern humans appear</p>
  152. </event>
  153.  
  154. </article>
  155.