00:28You
00:30You
00:50Earth
00:52Sixty-six million years ago
00:56During the great reign
00:58Of the dinosaurs
01:05Majestic creatures
01:09Giants
01:10And monsters
01:12That can often seem more imagined
01:16Than real
01:19Including
01:21This Pachycephalosaurus
01:29He's an old alpha male
01:33Eager to get back to his harem of females
01:42But something's caught their attention
01:49A rival male
01:56If the alpha doesn't get there
01:58He may lose them to the intruder
02:05There's just one problem
02:10There's a herd of giants in his way
02:25But holding on to his family
02:28Is all that matters
02:39He'll risk his life
02:41To reach them
02:59He'll risk his life to reach them
03:16He may have survived the crossing
03:19But the battle
03:21Has just begun
03:24The trespasser is younger
03:27Stronger
03:28And more aggressive
03:38And he won't surrender these females
03:43Without a fight
03:48Their four-inch-thick skulls
03:51Are designed for a brutal style of combat
04:16Neither side
04:17Is backing down
04:31This time
04:33The alpha is hurt
04:39Days invading fast
04:41His hold on his family
04:43Is slipping away
04:48Sensing his weakness
04:50The intruder prepares
04:52For a finishing blow
05:07But in the world of Tyrannosaurus Rex
05:15The only battle that counts
05:18Is for survival
05:25This is the age
05:28Of the dinosaurs
05:29Of the dinosaurs
05:30Of the dinosaurs
05:33Of the dinosaurs
05:35Of the dinosaurs
22:29We're right back.
29:04We're right back.
29:24They must improve over time and transform in ways that will help them survive.
29:39Finally, 12 million years after the demise of the rancosaurs, the dinosaurs can begin
29:49to come out of the shadows.
29:58As the end of the Triassic draws near, vast forests still dominate the land, now more vibrant
30:09than ever.
30:11And the dinosaurs are reaping the benefits, like Platyosaurus, a dinosaur trailblazer.
30:40This little one and her siblings are embarking on a mission to explore their new world with
30:53almost no regard for the dangers it may hold.
31:10They may not look any bigger than little Marasukas, but when they grow up, they grow up bigger.
31:27They are the first dinosaurs to become gigantic.
31:37Over seven meters long, they've come a long way since their tiny ancestors ran for their
31:45lives.
31:52And unlike the rancosaurs, these giants can easily reach the higher vegetation.
32:12They even have a trick for reaching the most tender shoots of all.
32:17of all.
32:37Excessive maybe, but worth it.
32:45Excessive maybe, but worth it.
32:46Excessive maybe, but worth it.
32:47Because an adult Plateosaurus must eat 25 kilos of plants each day.
32:57And to wash down that much food requires a lot of water.
33:32Oh, my God.
33:40It's an easy life, but in the age of the early dinosaurs, even a giant like Platyosaurus
33:55must be careful, because there is another dinosaur on the rise, a newcomer with a taste
34:10for blood, proconsonators, a carnivore with razor-sharp teeth and killer claws.
34:39His descendants will one day include Tyrannosaurus rex.
34:46But for now, this angry predator is only the size of a turkey.
35:06While the matchup between these two dinosaurs may be a little lopsided, it won't stay that
35:21way.
35:26Over time, a fierce rivalry will grow between two great dinosaur clans—the herbivores,
35:36and the carnivores.
35:46But for the time being, all dinosaurs are facing a much greater threat than each other.
36:20In the water and on land, the ancient reptiles remain top of the food chain.
36:51The dinosaurs are growing as a force in the world.
36:56But their rise is slow.
37:01The planet still belongs to the reptiles.
37:10For the dinosaurs to truly challenge them, it will take millions of years.
37:21Shaped by Earth's dynamic forces, they grow fiercer, more powerful, more advanced.
37:37By the end of the Triassic, the dinosaurs are ready to flex their muscle.
37:50But there are new creatures also vying for domination.
37:56And in the mountains of Tangia, some of them have taken to the air.
38:14Pterosaurs, flying reptiles with a wingspan of two meters.
38:27And they are in total command of the Triassic skies.
38:30Pterosaurs, flying reptiles, flying reptiles, flying reptiles, flying reptiles.
38:46These jagged peaks are their mating grounds.
38:51Pterosaurs, flying reptiles, flying reptiles.
39:07And this male has spotted a female.
39:12Pterosaurs, flying reptiles, flying reptiles, flying reptiles, flying reptiles.
39:17First, eject the competition.
39:28Now, it's time for the courtship to begin.
39:47During these rituals, the pterosaurs are focused entirely on each other.
39:54Not their surroundings.
40:00Which can be costly.
40:03Because dinosaurs dwell in these canyons.
40:25The largest member of the Carnivore clan, Lillian Sternus.
40:38Twice as long as a grizzly bear with claws that can tear through flesh.
40:48And with her finely tuned sense of smell, she doesn't miss a thing.
41:31Dozens of eyes are circling above.
41:36Even with her camouflage, one wrong move could blow her cover.
42:10The Lillian Sternus
42:22The Lillian Sternus
42:24The Lillian Sternus
42:42Oh
43:01This moment marks a new chapter in the rise of the dinosaurs
43:10At last they are a force to be feared
43:22But the commotion of her attack has attracted another predator
43:30The ancient reptiles have terrorized the dinosaurs from the beginning
43:38But that ends now
43:44Lillian Sternus won't be skulking back to the shadows
43:52She can hold her ground
44:08The trouble is
44:10Here at the end of the Triassic
44:14The ground itself is about to throw the entire dinosaur story into chaos
44:43It's extreme
44:46The
45:01To be continued
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