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These are the user uploaded subtitles that are being translated: 1 00:00:48,700 --> 00:00:52,400 80 millions years ago, two dinosaurs, 2 00:00:52,650 --> 00:00:57,150 a crested Protoceratops and sharp-clawed Velociraptor, 3 00:00:57,300 --> 00:00:59,800 fought to the death. 4 00:01:03,900 --> 00:01:07,800 Somehow, as they died in the sands of the Gobi desert, 5 00:01:08,050 --> 00:01:10,850 their battle was frozen in time. 6 00:01:11,050 --> 00:01:13,450 The Velociraptor flat on its back, 7 00:01:13,700 --> 00:01:17,900 its clawed arm caught in the jaws of the Protoceratops. 8 00:01:18,550 --> 00:01:21,250 An extraordinary fossil. 9 00:01:21,500 --> 00:01:26,900 A mysterious glimpse of life and death in the age of dinosaurs. 10 00:01:56,150 --> 00:01:59,250 For more than 150 million years, 11 00:01:59,500 --> 00:02:02,600 dinosaurs roamed every corner of the planet. 12 00:02:03,100 --> 00:02:06,100 Only a very few left evidence of their existence, 13 00:02:06,350 --> 00:02:08,750 their fossilized bones. 14 00:02:11,050 --> 00:02:15,150 And those bones never sees to fascinate us. 15 00:02:26,500 --> 00:02:31,200 Dinosaurs came in amazing shapes and sizes. 16 00:02:31,950 --> 00:02:36,250 Some were the largest animals ever to walk the Earth. 17 00:02:44,500 --> 00:02:48,700 Paleontologists, the scientists, who study prehistoric life, 18 00:02:48,950 --> 00:02:52,850 are discovering more dinosaurs now, than ever before. 19 00:02:54,150 --> 00:02:57,650 And this fossil evidence is allowing them to reconstruct 20 00:02:57,900 --> 00:03:00,000 not only their strange skeletons, 21 00:03:00,200 --> 00:03:02,600 but also their lives. 22 00:03:04,550 --> 00:03:07,750 An example is this gigantic long-necked plant-eater, 23 00:03:08,000 --> 00:03:09,900 known as Seismosaurus. 24 00:03:10,100 --> 00:03:11,500 Found in New Mexico, 25 00:03:11,750 --> 00:03:13,850 it lived during the Jurassic Period, 26 00:03:14,100 --> 00:03:16,100 150 millions years ago, 27 00:03:16,250 --> 00:03:20,050 when many dinosaurs grew to unprecedented size. 28 00:03:20,400 --> 00:03:24,100 Seismosaurus means "earth-shaking lizard", 29 00:03:24,250 --> 00:03:25,950 and there's no doubt, 30 00:03:26,200 --> 00:03:30,000 that their footsteps echoed across the Jurassic landscape. 31 00:03:30,500 --> 00:03:34,300 Measuring 110 feet from nose to tail, 32 00:03:34,550 --> 00:03:38,050 it is one of the longest dinosaurs ever discovered. 33 00:03:38,800 --> 00:03:40,800 Strangely, when it was excavated, 34 00:03:41,050 --> 00:03:44,850 some 240 smooth, round stones were found 35 00:03:45,100 --> 00:03:48,200 in and around its huge stomach cavity. 36 00:03:57,350 --> 00:03:58,750 Some scientists believe, 37 00:03:59,000 --> 00:04:01,800 Seismosaurus swallowed stones to help its digestion. 38 00:04:02,000 --> 00:04:04,200 Others say, that finding the stones 39 00:04:04,450 --> 00:04:06,950 was a coincidence, that they were part of the riverbed, 40 00:04:07,200 --> 00:04:09,700 where Seismosaurus was found. 41 00:04:18,050 --> 00:04:21,850 Seismosaurus weighed over 30 tons, 42 00:04:22,100 --> 00:04:24,700 as much as 8 elephants. 43 00:04:26,350 --> 00:04:29,450 It must have consumed hundreds of pounds 44 00:04:29,700 --> 00:04:31,900 of vegetation every day. 45 00:04:34,700 --> 00:04:38,800 Sometimes scientists can even learn, what dinosaurs ate. 46 00:04:40,850 --> 00:04:45,950 From clues they left behind in their fossilized dung. 47 00:04:50,300 --> 00:04:54,100 Dinosaurs were first discovered in Europe and America. 48 00:04:54,350 --> 00:04:58,250 But in the 20th century, scientific explorers struck out 49 00:04:58,400 --> 00:05:00,900 for the most remote corners of the Earth. 50 00:05:01,800 --> 00:05:06,800 And a full extend in the dinosaur kingdom began to be revealed. 51 00:05:11,950 --> 00:05:14,150 The Gobi desert spans 52 00:05:14,400 --> 00:05:17,700 a half-million square miles of Mongolia and China. 53 00:05:17,900 --> 00:05:21,300 The ancient land of Genghis Khan. 54 00:05:29,450 --> 00:05:33,150 Beneath sands, that camel caravans traversed for centuries, 55 00:05:33,400 --> 00:05:36,400 lay a vast treasure trove of fossils. 56 00:05:36,650 --> 00:05:39,550 Undisturbed for more than 70 million years, 57 00:05:39,800 --> 00:05:42,800 that would forever change our view of dinosaur life. 58 00:05:53,400 --> 00:05:56,500 In 1920s, a team of scientists 59 00:05:56,750 --> 00:05:58,850 from the American Museum of Natural History 60 00:05:59,050 --> 00:06:02,450 set out to explore the little-known Gobi. 61 00:06:02,700 --> 00:06:06,200 Their leader was Roy Chapman Andrews. 62 00:06:13,750 --> 00:06:17,350 Andrews and his team traveled in a fleet of automobiles. 63 00:06:17,600 --> 00:06:20,500 It was one of the first major expeditions 64 00:06:20,750 --> 00:06:24,150 used motorized transport in Central Asia. 65 00:06:24,550 --> 00:06:27,450 To keep his expeditions supplied, 66 00:06:27,700 --> 00:06:31,200 when the nearest gas station was 1000 miles away, 67 00:06:31,450 --> 00:06:33,550 he came up with a novel plan. 68 00:06:34,000 --> 00:06:37,500 Sending out camel caravans in advance, 69 00:06:37,750 --> 00:06:40,050 loaded with food and fuel. 70 00:06:40,250 --> 00:06:45,050 And the camels provided an unexpected service to the expedition. 71 00:06:45,200 --> 00:06:48,600 Hair, plucked from their shedding winter coats 72 00:06:48,850 --> 00:06:51,650 was ideal for packing fragile fossils. 73 00:06:51,950 --> 00:06:54,450 Mongolia was a dangerous place, 74 00:06:54,700 --> 00:06:57,000 full of roving bandits. 75 00:06:57,200 --> 00:07:00,900 But Andrews thought to be the inspiration for Indiana Jones, 76 00:07:01,150 --> 00:07:03,850 reveled in the adventure of it all. 77 00:07:04,950 --> 00:07:08,550 Never again will i have such a feeling as Mongolia gave me. 78 00:07:08,700 --> 00:07:11,800 All this thrilled me to the core. 79 00:07:12,050 --> 00:07:15,150 Somewhere in the depths of that vast silent desert 80 00:07:15,400 --> 00:07:18,900 lay those records of the past, that i had come to seek. 81 00:07:23,200 --> 00:07:25,000 Andrews fended off the bandits, 82 00:07:25,150 --> 00:07:28,650 but he and his team could not avoid the violent sandstorms, 83 00:07:28,900 --> 00:07:32,100 that often sweep across the Gobi. 84 00:07:43,350 --> 00:07:45,250 To their amazement, 85 00:07:45,500 --> 00:07:49,200 they found that each new storm uncovered a wealth of bones. 86 00:07:49,400 --> 00:07:52,400 Dinosaurs bones never before seen, 87 00:07:52,650 --> 00:07:56,150 and perfectly preserved in the desert sands. 88 00:08:00,150 --> 00:08:02,550 Mark Norell and Mike Novacek 89 00:08:02,600 --> 00:08:04,300 of the American Museum of Natural History, 90 00:08:04,500 --> 00:08:07,500 following in Andrews' footsteps, 91 00:08:07,750 --> 00:08:09,750 have been leading expeditions to the Gobi 92 00:08:10,000 --> 00:08:12,000 every year since 1990. 93 00:08:45,050 --> 00:08:47,750 Fascinated by dinosaurs in their youth, 94 00:08:48,000 --> 00:08:50,900 Mike and Mark have become renowned paleontologists. 95 00:08:51,700 --> 00:08:54,000 They have dug dinosaurs all over the world, 96 00:08:54,250 --> 00:08:57,650 but they have made their most spectacular finds here, 97 00:08:57,800 --> 00:08:59,400 in the Gobi Desert. 98 00:09:19,900 --> 00:09:25,100 Dr. Julia Clark has arrived in Mongolia's capital Ulaanbaatar, 99 00:09:25,350 --> 00:09:28,450 with graduate students Alan Turner and Amy Balanoff 100 00:09:28,600 --> 00:09:31,100 to prepare to this year's expedition. 101 00:09:33,900 --> 00:09:35,600 They are part of a team, 102 00:09:35,850 --> 00:09:38,050 that will join Mike and Mark in the desert. 103 00:09:38,950 --> 00:09:41,250 This will be my sixth summer in the Gobi. 104 00:09:41,500 --> 00:09:43,600 Mongolia has proven so rich in fossils, 105 00:09:43,850 --> 00:09:45,150 i know, that each year, 106 00:09:45,400 --> 00:09:47,800 there will be great new finds to be made. 107 00:10:05,350 --> 00:10:09,050 There are few paved roads outside Ulaanbaatar. 108 00:10:09,300 --> 00:10:11,600 The team's destination in the western Gobi 109 00:10:11,850 --> 00:10:14,150 is a minimum of three days' driving. 110 00:10:14,450 --> 00:10:18,850 A "Mad Max" journey over hot, dusty plains 111 00:10:19,100 --> 00:10:21,900 and through mountain passes. 112 00:10:43,250 --> 00:10:47,150 In 1921, after months of overland travel, 113 00:10:47,400 --> 00:10:51,400 Roy Chapman Andrews' motor-caravan came across 114 00:10:51,650 --> 00:10:53,850 a strange and beautiful place 115 00:10:54,050 --> 00:10:57,950 of eroded canyons and sandstone towers. 116 00:10:58,200 --> 00:11:02,300 The late-afternoon sun seemed to set the rocks on fire. 117 00:11:02,650 --> 00:11:06,150 Andrews named it the Flaming Cliffs. 118 00:11:06,600 --> 00:11:10,500 Here they would come upon one of the greatest repositories 119 00:11:10,750 --> 00:11:13,750 of dinosaur remains ever found. 120 00:11:14,150 --> 00:11:16,050 More than 80 years later, 121 00:11:16,300 --> 00:11:19,000 the Flaming Cliffs are still a fabled and productive destination 122 00:11:19,150 --> 00:11:21,250 for dinosaur hunters. 123 00:11:26,900 --> 00:11:28,200 To find dinosaurs, 124 00:11:28,450 --> 00:11:32,050 paleontologists must first look in the right places. 125 00:11:32,450 --> 00:11:35,950 They know, that fossils are preserved in certain rock deposits. 126 00:11:36,200 --> 00:11:40,100 The only tool, they need at first, is keen eyesight. 127 00:11:40,650 --> 00:11:43,750 Tiny white bone fragments on the surface hint, 128 00:11:44,000 --> 00:11:47,500 at what can be an entire dinosaur buried below. 129 00:11:47,800 --> 00:11:50,400 There's alot of bones in here. 130 00:11:50,550 --> 00:11:51,750 Always a good place. 131 00:11:52,000 --> 00:11:54,800 Hey, come check this out. -Oh, what? - An egg. 132 00:11:54,950 --> 00:11:57,050 With decades of experience, 133 00:11:57,300 --> 00:12:01,000 Mike and Mark readily spot fossils and identify them. 134 00:12:03,500 --> 00:12:05,700 For grad students Alan and Amy, 135 00:12:05,850 --> 00:12:08,050 time in the field is the best way, 136 00:12:08,300 --> 00:12:10,400 to develop their own skills. 137 00:12:10,650 --> 00:12:13,450 This is my first time going to the Gobi with Mark and everyone. 138 00:12:13,700 --> 00:12:16,300 I'm really excited and happy to be a part of a tradition, 139 00:12:16,550 --> 00:12:18,750 that goes back to Roy Chapman Andrews. 140 00:12:20,250 --> 00:12:22,550 The Gobi expeditions are a collaboration 141 00:12:22,800 --> 00:12:24,700 with the Mongolian Acadamy of Sciences. 142 00:12:24,900 --> 00:12:29,000 This year, Mongolian grad student Boldra Mingin joins the team. 143 00:12:29,150 --> 00:12:32,250 My father is a paleontologist. 144 00:12:32,500 --> 00:12:35,800 And when he first showed me a giant skeleton found in Mongolia, 145 00:12:36,050 --> 00:12:39,750 i couldn't believe, such animals really lived. 146 00:12:40,000 --> 00:12:43,500 I have loved finding fossils ever since. 147 00:12:55,450 --> 00:12:58,550 Today, after only a few hours of searching, 148 00:12:58,800 --> 00:13:01,700 the team uncovers a fossilized skull. 149 00:13:01,950 --> 00:13:06,350 Julia is quick to recognize it as that of a large, armored dinosaur. 150 00:13:07,700 --> 00:13:09,100 It's called the Pinacosaurus, 151 00:13:09,350 --> 00:13:11,550 it was sort of a heavy tank of its day. 152 00:13:15,750 --> 00:13:18,450 With experience, we can visualize, 153 00:13:18,700 --> 00:13:20,900 what fossils like this, would have looked like in live. 154 00:13:24,700 --> 00:13:27,600 Pinacosaurus and its relatives, like this Tarchia, 155 00:13:27,850 --> 00:13:29,550 were built for defence. 156 00:13:29,800 --> 00:13:33,500 Their backs bristled with rows of hard, bony plates and spikes. 157 00:13:33,750 --> 00:13:35,650 Even their eyelids were armored. 158 00:13:35,900 --> 00:13:37,900 And their tails ended in a massive bony club. 159 00:13:43,450 --> 00:13:48,250 One of Tarchia's few enemies was the ferocious Tarbosaurus, 160 00:13:48,500 --> 00:13:51,600 whose bones have also been found in the Gobi. 161 00:14:00,250 --> 00:14:04,050 Tarbosaurus was a close relative of Tyrannosaurus Rex, 162 00:14:04,200 --> 00:14:06,400 and it was a top predator. 163 00:14:06,550 --> 00:14:10,050 It was 30 feet long and weighet five tons. 164 00:14:10,300 --> 00:14:12,600 It had a super-sized bite 165 00:14:12,750 --> 00:14:16,650 with razor-sharp teeth nearly six inches long. 166 00:14:19,750 --> 00:14:22,050 Scientists have debated for many years, 167 00:14:22,300 --> 00:14:25,800 how fast or slow these big predators were. 168 00:14:27,600 --> 00:14:30,800 This scale model of a T-Rex skeleton reveals, 169 00:14:31,150 --> 00:14:32,650 how a massive two-legged, 170 00:14:32,900 --> 00:14:35,000 or bipedal dinosaur might have moved. 171 00:14:35,300 --> 00:14:40,300 As they walked, they shifted their entire weight from leg to leg, 172 00:14:40,450 --> 00:14:42,150 as humans do. 173 00:14:43,400 --> 00:14:46,700 Their large tales helped to balance them. 174 00:14:48,650 --> 00:14:51,650 Their legs were directly beneath their hips, 175 00:14:51,900 --> 00:14:54,700 allowing them to carry more weight and move faster. 176 00:14:55,050 --> 00:15:00,050 Dinosaurs like T-Rex could have reached speeds up to 25 mph. 177 00:15:00,400 --> 00:15:04,100 Faster than an average human could run. 178 00:15:09,450 --> 00:15:13,250 Tarbosaurus was at the top of the food chain in the area of Asia, 179 00:15:13,500 --> 00:15:16,100 that is now the Gobi Desert. 180 00:15:29,550 --> 00:15:31,750 But Tarchia was no wimp, 181 00:15:31,900 --> 00:15:36,300 and could use its tale club to cripple or kill an attacker. 182 00:16:21,650 --> 00:16:23,750 In the 1920s, the Andrews' expeditions 183 00:16:24,000 --> 00:16:26,200 found a number of new dinosaurs. 184 00:16:26,400 --> 00:16:30,300 Their most important discovery wasn't a ferocious predator. 185 00:16:30,450 --> 00:16:32,650 It was something rather small. 186 00:16:32,800 --> 00:16:36,700 But one of the great dinosaur finds of all time. 187 00:16:41,750 --> 00:16:44,550 They find the first dinosaur eggs. 188 00:16:44,700 --> 00:16:48,400 Lying in large round nests in the ground. 189 00:16:49,950 --> 00:16:54,950 This amazing find confirmed, that dinosaurs actually laid eggs. 190 00:16:56,000 --> 00:16:57,900 Andrews and his team believed, 191 00:16:58,150 --> 00:16:59,950 the eggs belonged to Protoceratops, 192 00:17:00,150 --> 00:17:03,450 because they found so many of these dinosaurs in the Gobi. 193 00:17:03,700 --> 00:17:05,400 About the size of sheep, 194 00:17:05,750 --> 00:17:10,150 Protoceratops had a distinctive head shield and a hook-like beak. 195 00:17:10,900 --> 00:17:14,200 On top of one nest, they made a puzzling discovery. 196 00:17:14,950 --> 00:17:18,750 The skeleton of a bird-like meat-eating dinosaur, 197 00:17:18,900 --> 00:17:21,400 definitely not a Protoceratops. 198 00:17:21,650 --> 00:17:23,550 They concluded, that it was a predator, 199 00:17:23,800 --> 00:17:25,300 that had been raiding the nest. 200 00:17:25,500 --> 00:17:27,500 It was named Oviraptor, 201 00:17:27,750 --> 00:17:30,050 meaning "egg thief". 202 00:17:31,100 --> 00:17:35,000 It took 7 years to prove, they were wrong. 203 00:17:35,650 --> 00:17:40,150 In 1993, Mark Norell made an extraordinary find in the Gobi. 204 00:17:40,900 --> 00:17:44,300 A fossilized dinosaur embryo. 205 00:17:46,050 --> 00:17:47,250 We discovered, 206 00:17:47,500 --> 00:17:50,500 that it was the embryo of a very close relative of Oviraptor. 207 00:17:52,700 --> 00:17:55,400 In other words, the dinosaur was not actually stealing the eggs, 208 00:17:55,650 --> 00:17:58,150 it was a good parent, that was brooding them. 209 00:17:59,900 --> 00:18:03,200 The discovery of Oviraptors, preserved on their nests, 210 00:18:03,350 --> 00:18:06,350 sheds new light on these dinosaurs. 211 00:18:06,600 --> 00:18:10,400 They sat on their eggs, just like modern birds. 212 00:18:20,650 --> 00:18:22,650 Many of the Gobi dinosaurs 213 00:18:22,900 --> 00:18:25,500 are in a remarkable state of preservation. 214 00:18:26,700 --> 00:18:30,300 Undisturbed by scavengers or damaged by erosion. 215 00:18:31,850 --> 00:18:34,250 Not only Oviraptors, but many others, 216 00:18:34,400 --> 00:18:37,500 like the fighting dinosaurs. 217 00:18:42,450 --> 00:18:46,150 And even a nest full of barely hatched baby Protoceratops... 218 00:18:46,600 --> 00:18:50,700 How did they die so suddenly, and remain so intact? 219 00:18:52,650 --> 00:18:54,550 Until recently, it was thought, 220 00:18:54,800 --> 00:18:56,700 that sandstorms buried these creatures. 221 00:18:57,100 --> 00:19:01,300 New evidences suggests a much more spectacular scenario. 222 00:19:01,750 --> 00:19:03,050 During this expedition, 223 00:19:03,300 --> 00:19:06,400 heavier than normal rainfall flooded parts of the Gobi. 224 00:19:06,600 --> 00:19:08,000 According to a new theory, 225 00:19:08,150 --> 00:19:10,950 water and sand dunes played a dramatic part 226 00:19:11,200 --> 00:19:13,400 in preserving dinosaur remains. 227 00:19:15,700 --> 00:19:18,400 Scientists now believe, that every few centuries 228 00:19:18,550 --> 00:19:23,550 rainstorms of immense power swept down on this arid world, 229 00:19:23,800 --> 00:19:27,200 with catastrophic effect. 230 00:19:35,550 --> 00:19:38,350 The inhabitants could not have known, what was coming. 231 00:19:38,500 --> 00:19:42,100 A pair of speedy, aggressive Velociraptors were on a hunt, 232 00:19:42,350 --> 00:19:45,650 and approached a large group of nesting Oviraptors. 233 00:19:45,900 --> 00:19:50,500 But on this day, unaware, that they are chasing their last meal. 234 00:20:37,550 --> 00:20:40,450 Bones become fossilized, when they are quickly buried, 235 00:20:40,600 --> 00:20:43,700 protecting them from weather and predators. 236 00:20:43,950 --> 00:20:47,650 Over time, living tissues decay and bone is replaced by minerals, 237 00:20:47,900 --> 00:20:50,600 seeping in from the surrounding sediment. 238 00:20:51,500 --> 00:20:53,900 But bones are not the only clues 239 00:20:54,150 --> 00:20:56,550 to the understanding of dinosaur life. 240 00:20:56,550 --> 00:20:58,850 New evidence is revolutionizing our view 241 00:20:59,100 --> 00:21:01,300 of dinosaurs like Velociraptor. 242 00:21:01,600 --> 00:21:04,600 Long thought to be leathery-skinned or scaly, 243 00:21:04,850 --> 00:21:08,350 Velociraptor was in fact covered with feathers. 244 00:21:08,600 --> 00:21:10,400 And though it could not fly, 245 00:21:10,650 --> 00:21:12,550 it had the same s-shaped neck, 246 00:21:12,800 --> 00:21:17,100 four-toed feet, and many other features, that birds have today. 247 00:21:21,550 --> 00:21:24,650 Julia Clarke is using the very latest evidence 248 00:21:24,900 --> 00:21:27,200 to study one of nature’s most enduring mysteries, 249 00:21:27,400 --> 00:21:28,800 the origin of birds, 250 00:21:29,050 --> 00:21:32,750 and how feathers developed to give them the power of flight. 251 00:21:34,600 --> 00:21:36,500 Understanding the evolution of flight 252 00:21:36,650 --> 00:21:39,650 is to me one of the most interesting questions 253 00:21:39,900 --> 00:21:41,900 in dinosaur paleontology. 254 00:21:43,200 --> 00:21:45,300 Dozens of new dinosaur species 255 00:21:45,450 --> 00:21:47,550 are being discovered in the north of China. 256 00:21:47,650 --> 00:21:50,850 They are preserved in extremely fine volcanic ash 257 00:21:51,100 --> 00:21:52,200 and, for the first time, 258 00:21:52,450 --> 00:21:54,650 we can see distinct impressions of feathers 259 00:21:54,850 --> 00:21:56,950 associated with their delicate bones, 260 00:21:57,200 --> 00:21:59,200 confirming to us that non-flying dinosaurs 261 00:21:59,450 --> 00:22:02,250 were the first feathered creatures on Earth. 262 00:22:07,650 --> 00:22:09,750 But at least one group of dinosaurs, 263 00:22:10,000 --> 00:22:11,400 like this Confuciusornis, 264 00:22:11,600 --> 00:22:13,400 recently found in China, 265 00:22:13,650 --> 00:22:17,150 did develop the body structure and the kind of feathers 266 00:22:17,400 --> 00:22:20,700 that allowed them to take to the sky. 267 00:22:31,200 --> 00:22:35,700 65 million years ago dinosaurs disappeared from Earth. 268 00:22:35,850 --> 00:22:38,250 Or so it was long thought. 269 00:22:39,500 --> 00:22:43,400 Today we know that the dinosaurs are not all gone. 270 00:22:43,650 --> 00:22:48,550 One line of dinosaurs survives, and we call them birds. 271 00:23:05,500 --> 00:23:07,500 Mongolia is a great place to find 272 00:23:07,750 --> 00:23:10,350 some of the last non-flying dinosaurs, 273 00:23:10,550 --> 00:23:11,650 that lived on Earth. 274 00:23:13,600 --> 00:23:17,400 But to go further back in time and find the earliest dinosaurs, 275 00:23:17,550 --> 00:23:19,650 scientists come to places like 276 00:23:19,900 --> 00:23:23,400 the high desert badlands of New Mexico. 277 00:23:26,300 --> 00:23:30,400 The land has a rich and turbulent human history of Pueblo people, 278 00:23:30,650 --> 00:23:34,550 Spanish conquistadors, cowboys,and cattle rustlers. 279 00:23:35,500 --> 00:23:38,400 But it has an even richer history of life 280 00:23:38,650 --> 00:23:41,650 stretching back over 200 million years. 281 00:23:43,550 --> 00:23:46,250 It is one of the few places in the world, 282 00:23:46,500 --> 00:23:49,900 where rock layers span the Age of Dinosaurs. 283 00:23:50,600 --> 00:23:53,900 The deeper the layer, the older the rock. 284 00:23:54,150 --> 00:23:57,950 At the top, rock from the Cretaceous. 285 00:24:05,400 --> 00:24:08,100 Below that, further back in time, 286 00:24:08,350 --> 00:24:11,050 the gold and white cliffs of the Jurassic. 287 00:24:13,650 --> 00:24:18,250 And near the bottom, the oldest, red Triassic badlands, 288 00:24:18,500 --> 00:24:21,300 when dinosaurs first appeared. 289 00:24:45,550 --> 00:24:48,250 Alan Turner is having a busy summer. 290 00:24:48,500 --> 00:24:50,900 In addition to trekking across the Gobi, 291 00:24:51,150 --> 00:24:54,150 he is working with his fellow grad student Sterling Nesbitt 292 00:24:54,400 --> 00:24:57,900 on a new excavation at a place called Ghost Ranch. 293 00:25:00,350 --> 00:25:02,550 Sterling grew up in the Southwest, 294 00:25:02,700 --> 00:25:06,000 reading about dinosaurs and the amazing discoveries 295 00:25:06,250 --> 00:25:08,950 that had been made at Ghost Ranch. 296 00:25:09,600 --> 00:25:13,100 I have spent every summer since i was 15 digging for dinosaurs. 297 00:25:13,650 --> 00:25:16,550 I have always wanted to be a paleontologist 298 00:25:16,800 --> 00:25:20,500 so the chance to excavate at Ghost Ranch is a dream come true. 299 00:25:26,550 --> 00:25:29,650 Ghost Ranch was explored in the 1940s 300 00:25:29,900 --> 00:25:32,900 by paleontologists from the American Museum. 301 00:25:36,900 --> 00:25:42,100 They discovered rich fossil beds 220 million years old 302 00:25:42,350 --> 00:25:45,850 with hundreds of bones of a small, early dinosaur 303 00:25:46,100 --> 00:25:48,300 now considered a kind of blueprint 304 00:25:48,550 --> 00:25:50,950 for the carnivorous dinosaurs yet to come. 305 00:25:54,550 --> 00:26:00,050 Named Coelophysis, it grew to nine feet long and weighed 100 pounds. 306 00:26:00,300 --> 00:26:04,000 Its size and leg bones indicate an ability to run fast. 307 00:26:04,150 --> 00:26:06,850 On each hand it had three-clawed fingers 308 00:26:07,100 --> 00:26:08,500 for catching and holding prey. 309 00:26:08,700 --> 00:26:11,800 Its large eye sockets suggest very acute vision. 310 00:26:12,050 --> 00:26:15,550 It all adds up to a small but effective predator. 311 00:26:20,600 --> 00:26:24,100 Pursuing his graduate research, Sterling became intrigued 312 00:26:24,250 --> 00:26:27,550 by the dozens of unexamined fossils at the museum, 313 00:26:27,800 --> 00:26:30,600 collected from Ghost Ranch in the 1940s. 314 00:26:30,950 --> 00:26:34,350 He knew that not all dinosaur discoveries are made in the field. 315 00:26:34,800 --> 00:26:37,200 Each expedition collects fossils 316 00:26:37,450 --> 00:26:39,850 and brings them back for later examination. 317 00:26:40,050 --> 00:26:45,050 But some remain in museum catacombs for decades, unopened. 318 00:26:48,400 --> 00:26:49,900 It's amazing, 319 00:26:50,150 --> 00:26:52,350 When you walk through these catacombs, 320 00:26:52,600 --> 00:26:54,400 filled with tens of thousands of dinosaur bones, 321 00:26:54,600 --> 00:26:56,900 some still wrapped in plaster, 322 00:26:57,150 --> 00:26:58,150 and you realize 323 00:26:58,400 --> 00:27:00,500 that they were dug up by really famous paleontologists. 324 00:27:00,700 --> 00:27:02,400 To get the chance to see, 325 00:27:02,650 --> 00:27:05,250 what they saw for the first time in 70 or 80 years, 326 00:27:05,450 --> 00:27:08,050 is pretty incredible. 327 00:27:12,700 --> 00:27:14,800 It took me a few months to prepare 328 00:27:15,050 --> 00:27:17,350 and remove the bones from that old plaster cast, 329 00:27:17,550 --> 00:27:19,950 but by comparing it to Coelophysis correctly, 330 00:27:20,200 --> 00:27:23,000 I very quickly realized, that this was not a dinosaur at all. 331 00:27:23,150 --> 00:27:25,850 It was actually an animal new to science. 332 00:27:36,300 --> 00:27:40,500 It is not often that a grad student discovers a new species. 333 00:27:40,750 --> 00:27:43,450 And when his find captures the attention 334 00:27:43,700 --> 00:27:45,700 of leading paleontologists like Mike and Mark, 335 00:27:45,900 --> 00:27:48,600 it is a memorable day. 336 00:27:56,250 --> 00:27:59,850 Sterling named this new creature Effigia, 337 00:28:00,100 --> 00:28:03,400 the Latin word for ghost, in honor of Ghost Ranch. 338 00:28:03,650 --> 00:28:06,850 It was up to nine feet long and weighed about 200 pounds. 339 00:28:07,400 --> 00:28:09,100 It really looks like a dinosaur, 340 00:28:09,350 --> 00:28:11,050 but one bone tells a different story. 341 00:28:11,250 --> 00:28:14,550 The ankle is that of an ancient relative of crocodiles, 342 00:28:14,800 --> 00:28:18,300 telling us that Effigia was a member of the crocodile group. 343 00:28:18,550 --> 00:28:22,750 But strangely Effigia walked upright on two legs. 344 00:28:34,400 --> 00:28:38,900 After the discovery of Effigia, i knew i had to go to New Mexico. 345 00:28:42,650 --> 00:28:45,550 My first stop was to see Alex Downs, 346 00:28:45,700 --> 00:28:47,900 curator of paleontology at Ghost Ranch, 347 00:28:48,150 --> 00:28:50,650 who has been working for years on Coelophysis. 348 00:28:52,200 --> 00:28:54,400 This is one of the few places in the world, 349 00:28:54,650 --> 00:28:56,750 where fossilized bones of early dinosaurs 350 00:28:57,000 --> 00:28:59,600 and their closest relatives are found together. 351 00:28:59,800 --> 00:29:01,800 There is a somewhat larger one here. 352 00:29:02,050 --> 00:29:05,150 This is a tip of the snout, and we can see the teeth here. 353 00:29:05,400 --> 00:29:07,600 And we have a beautiful skull... 354 00:29:07,950 --> 00:29:12,050 It's just missing one tooth. -That's great. 355 00:29:26,400 --> 00:29:28,800 For grad students like Sterling and Alan 356 00:29:29,050 --> 00:29:31,750 who work in classrooms and labs most of the year, 357 00:29:32,850 --> 00:29:35,250 the opportunity to spend a few weeks 358 00:29:35,500 --> 00:29:37,800 at a hot, dusty hunt for dinosaurs 359 00:29:38,000 --> 00:29:39,900 is what they live for. 360 00:29:44,550 --> 00:29:47,650 The new dig at Ghost Ranch is a joint project 361 00:29:47,800 --> 00:29:49,800 of the University of California Berkeley 362 00:29:50,050 --> 00:29:51,550 and the American Museum. 363 00:29:55,550 --> 00:29:58,250 Once the overlying tons of rock are removed, 364 00:29:58,500 --> 00:30:00,300 the grad students soon realize 365 00:30:00,550 --> 00:30:03,250 they have come upon a huge fossil site. 366 00:30:12,650 --> 00:30:16,250 For Paleontologists great work is often accomplished, 367 00:30:16,500 --> 00:30:19,800 while lying down on the job. 368 00:30:27,450 --> 00:30:29,950 We hope to piece together a picture 369 00:30:30,200 --> 00:30:32,900 of which creatures lived in the Late Triassic. 370 00:30:36,600 --> 00:30:38,800 What their surroundings were like, 371 00:30:39,050 --> 00:30:42,150 and where they fit into the family tree of reptiles. 372 00:30:48,800 --> 00:30:50,700 When dinosaurs first appeared, 373 00:30:50,850 --> 00:30:54,450 this part of North America was a very different environment. 374 00:30:58,400 --> 00:31:01,600 The region had a wet tropical climate. 375 00:31:01,850 --> 00:31:03,450 Tall evergreen-like trees grew 376 00:31:03,700 --> 00:31:04,800 along the banks of streams and rivers 377 00:31:05,000 --> 00:31:07,700 cutting through a vast floodplain. 378 00:31:07,950 --> 00:31:10,950 All in all, it seemed to have been a rich habitat for life. 379 00:31:11,200 --> 00:31:12,400 The question is, 380 00:31:12,650 --> 00:31:15,250 how did early dinosaurs interact with other animals? 381 00:31:16,300 --> 00:31:19,600 Raptiles appeared on Earth before dinosaurs. 382 00:31:19,950 --> 00:31:23,950 Dinosaurs are reptiles too, but over 200 million years ago, 383 00:31:24,200 --> 00:31:26,300 they branched off from the evolutionary line 384 00:31:26,550 --> 00:31:28,650 leading towards crocodiles. 385 00:31:29,450 --> 00:31:32,850 Effigia was an early crocodile relative. 386 00:31:33,600 --> 00:31:36,400 Coelophysis was one of the first dinosaurs. 387 00:31:36,650 --> 00:31:38,950 Undoubtedly, they came across one another 388 00:31:39,200 --> 00:31:42,900 in the canyons and forests of the Triassic Southwest. 389 00:32:34,600 --> 00:32:38,100 The prospect of a new dinosaur discovery 390 00:32:38,350 --> 00:32:40,450 has brought Mike, Julia, and Mark 391 00:32:40,700 --> 00:32:43,000 to Ghost Ranch to see for themselves. 392 00:32:57,700 --> 00:33:00,500 The number of fossils here is staggering. 393 00:33:00,750 --> 00:33:02,750 Layers and layers of animals 394 00:33:03,000 --> 00:33:05,500 are piled up in this mass burial place, 395 00:33:05,700 --> 00:33:09,400 which seems to have been a sharp bend in an ancient riverbed. 396 00:33:09,850 --> 00:33:12,050 What happened here? 397 00:33:14,700 --> 00:33:17,300 The high desert landscape is dramatic, 398 00:33:17,550 --> 00:33:19,750 and so are the torrential rainsqualls 399 00:33:20,000 --> 00:33:23,600 that can turn dry canyons into raging rivers of death, 400 00:33:23,850 --> 00:33:27,450 as they must have done back in the age of dinosaurs. 401 00:33:31,100 --> 00:33:34,400 In Arizona’s Petrified Forest National Park, 402 00:33:34,650 --> 00:33:38,450 200 million year old fossilized trees are reappearing 403 00:33:38,600 --> 00:33:41,700 as the ground erodes around them, 404 00:33:41,950 --> 00:33:43,650 evidence of the ancient floods 405 00:33:43,900 --> 00:33:46,300 that violently uprooted and buried them. 406 00:33:48,500 --> 00:33:49,800 Though now extinct, 407 00:33:50,050 --> 00:33:52,550 these giant trees of the Triassic 408 00:33:52,800 --> 00:33:56,000 were similar to the Pacific redwoods of today. 409 00:33:58,400 --> 00:34:03,000 But it was not just trees that were swept up in ancient floods. 410 00:34:09,750 --> 00:34:14,350 Early dinosaurs like Coelophysis were always on the defensive. 411 00:34:14,600 --> 00:34:18,600 They lived in a world still dominated by larger reptiles, 412 00:34:18,950 --> 00:34:23,650 like this 1500-pound Postosuchus. 413 00:34:57,100 --> 00:35:01,100 Flash floods washed the drowned bodies of reptiles and dinosaurs 414 00:35:01,350 --> 00:35:03,350 into concentrated deposits. 415 00:35:03,550 --> 00:35:06,450 Perhaps this is why Sterling and team 416 00:35:06,700 --> 00:35:08,800 are finding so many in one area. 417 00:35:11,600 --> 00:35:13,100 When they locate a skeleton, 418 00:35:13,250 --> 00:35:15,750 they carefully excavate around it, 419 00:35:16,000 --> 00:35:20,200 then cover it up with a jacket made of plaster and toilet paper, 420 00:35:20,450 --> 00:35:24,050 which always comes in handy out in the field. 421 00:35:24,700 --> 00:35:27,400 This protects the fossils 422 00:35:27,650 --> 00:35:29,850 so that they can be transported to the lab, 423 00:35:30,300 --> 00:35:33,100 where the bones will be delicately separated from the rock. 424 00:35:33,550 --> 00:35:35,050 This summer's dig at Ghost Ranch 425 00:35:35,300 --> 00:35:37,500 has been productive beyond our greatest expectations. 426 00:35:38,000 --> 00:35:39,800 We have found something really exciting 427 00:35:40,050 --> 00:35:42,150 and we think it maybe a new dinosaur. 428 00:35:49,100 --> 00:35:52,800 It is thrilling to find a dinosaur we have never known before 429 00:35:53,050 --> 00:35:56,550 that has not seen the light of day for over 200 million years. 430 00:35:56,800 --> 00:35:58,500 It will take many months to determine 431 00:35:58,750 --> 00:36:00,850 what it looked like and how important it is, 432 00:36:01,050 --> 00:36:02,850 but it will surely change our views 433 00:36:03,100 --> 00:36:05,000 of how dinosaurs rose to dominance. 434 00:36:12,100 --> 00:36:15,100 There are things, the fossil record cannot preserve, 435 00:36:15,350 --> 00:36:17,150 that we may never know, 436 00:36:17,350 --> 00:36:19,650 such as the color of dinosaurs 437 00:36:19,900 --> 00:36:22,300 or precisely what sounds they made. 438 00:36:25,700 --> 00:36:28,900 But year by year, we learn more about them. 439 00:36:29,450 --> 00:36:33,450 Some dinosaurs traveled in herds and hunted in packs. 440 00:36:34,700 --> 00:36:38,000 We know that they made nests, protected their eggs, 441 00:36:38,250 --> 00:36:40,550 probably cared for their young. 442 00:36:41,000 --> 00:36:44,100 From som fossils we learned, who were the hunters, 443 00:36:44,350 --> 00:36:46,950 and who were the hunted. 444 00:36:47,200 --> 00:36:50,900 That feathers first appeared on non-flying dinosaurs, 445 00:36:51,150 --> 00:36:53,150 before birds evolved. 446 00:36:53,800 --> 00:36:58,800 And that some dinosaurs live on, as modern birds. 447 00:37:06,650 --> 00:37:08,550 Those who love to contemplate 448 00:37:08,800 --> 00:37:10,200 the secrets of the history of life, 449 00:37:10,400 --> 00:37:12,000 must come to places 450 00:37:12,250 --> 00:37:14,550 like Ghost Ranch and the Flaming Cliffs. 451 00:37:14,950 --> 00:37:17,550 It is hard to imagine our own human sense 452 00:37:17,800 --> 00:37:20,300 of who we are and where we come from 453 00:37:20,600 --> 00:37:23,900 without the records buried beneath our feet. 454 00:37:25,550 --> 00:37:27,950 For young paleontologists like Sterling and Alan, 455 00:37:28,200 --> 00:37:31,200 the adventure is just a beginning. 456 00:37:34,650 --> 00:37:36,850 Three quarters of a century ago, 457 00:37:37,000 --> 00:37:40,900 Roy Chapman Andrews discovered a whole new world of dinosaurs 458 00:37:41,150 --> 00:37:43,950 beneath the Flaming Cliffs. 459 00:37:44,200 --> 00:37:47,700 Camping in this magical place, he wroted in his diary, 460 00:37:47,950 --> 00:37:51,050 of a sense of having traveled back in time. 461 00:37:51,700 --> 00:37:57,200 It is a feeling shared by paleontologists then and now. 462 00:37:57,800 --> 00:38:02,700 In the evening shadows, the rocks took on fantastic shapes 463 00:38:02,950 --> 00:38:07,750 We seemed to be living in the world of along-gone yesterday. 464 00:38:08,400 --> 00:38:10,300 At any moment, 465 00:38:10,550 --> 00:38:15,750 I imagined that dinosaurs might wander to the doorways of our tents. 466 00:38:18,100 --> 00:38:21,200 We have discovered less than two percent 467 00:38:21,450 --> 00:38:24,250 of all the dinosaur species that once lived. 468 00:38:24,450 --> 00:38:25,450 Imagine... 469 00:38:25,600 --> 00:38:30,000 All those dinosaurs out there yet to be found. 470 00:38:35,150 --> 00:38:42,250 Translation: jierro Contact: podnapisi.net 38699

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