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00:15In the depths of space, a threat is looming.
00:22Trapped between the orbits of Jupiter and Mars,
00:28the asteroid belt.
00:32One and a half million chunks of ancient rock circling the Sun,
00:43drifting endlessly.
00:55But in a single moment of pure chance,
01:04one asteroid is thrown out of its orbit.
01:10A fleeting instant, millions of kilometers from Earth,
01:16sends it on a new trajectory towards the very center of our solar system.
01:34But its journey will come to a sudden and violent end,
01:41in one of the most catastrophic events in Earth's history.
01:50And the final chapter in the epic story of the dinosaurs.
01:58combine the force...
02:02nat,
02:02magpies,
02:02tromperes.
02:03etc.
02:03I'm sorry.
03:23It's three million years since the asteroid started its journey towards Earth.
03:30And the dinosaurs rule the planet.
03:35They dominate the land and are now entering the ocean as well.
03:43The high sea levels have split North America in two, creating endless coastlines, hundreds
04:01of tropical islands, and opportunity.
04:19But these islands are no paradise.
04:26They are home to a formidable predator.
04:34One of the fastest, most agile dinosaurs of its kind.
04:43North America's answer to the Spinosaurus.
05:01Just...not in the way you would think.
05:02Not even remotely.
05:08This is Hesperonis.
05:12He is formidable.
05:15And he is fast.
05:20But he's pretty much the opposite of his giant, terrifying cousins.
05:36He's awkward...and clumsy...and has tiny teeth.
05:44Not exactly the traits of a ferocious hunter.
05:49But what he does share with Spinosaurus is that he's not confined to dry land.
06:04In fact, he's the most advanced aquatic dinosaur in history.
06:17Like some sort of prehistoric penguin, he's able to swim far out the sea to access feeding
06:26grounds that were previously out of reach.
06:51This is the bounty of his new blue realm.
07:05Down here, his big clumsy feet become powerful propellers.
07:14And his 94 needle sharp teeth snatch fish with ease.
07:38But as an air breather, he's still tied to the surface.
07:56And the surface is not a safe place to linger.
08:00And the surface is not a safe place to linger.
08:14The air-seekers.
08:19His head-sensuit.
08:23The air-seekers.
08:28The air-seekers.
08:31The air-seekers.
08:33The air-seekers.
08:41Hesperonis must get back to the shore.
08:49But the Mosasaur moves with frightening speed.
08:57Luckily, Hesperonis is much more agile.
09:07But he's exhausted.
09:12Which gives the Mosasaur one last shot.
09:36Hesperonis is a true survivor.
09:41Venturing further into the ocean than any dinosaur ever has.
09:49But these waters are treacherous.
09:52Even for the best swimmers.
09:54Huh?
10:02Despite the dinosaur's success in the shadows, the Mosasaur's rule the waves.
10:19800 miles north.
10:22On land.
10:23It's a different story.
10:45It's a different story.
10:53The great sauropods are thriving among the tall trees.
10:58As they have since the dawn of the Jurassic.
11:08But down below, there has been a revolution.
11:18A female handersaw.
11:24While she may be dwarfed in present company, she's actually larger than an elephant.
11:34And she won't be held up by these giants.
11:39Because nothing can stop a mother on a mission.
11:45And that mission is to feed her family.
11:52Who are somewhere down there.
12:07Long ago, their cheek stuffing ancestors were scarce and scattered.
12:16But hadrosaurs are now so successful, their herds are thousands strong.
12:25The greatest gatherings of dinosaurs the world has ever known.
12:33But this female's family isn't traveling with the herd.
12:40There in the safety of the creche.
12:43A sprawling nursery for hundreds of young hadrosaurs.
12:51Including her own.
12:58At six months old,
13:00they have insatiable appetites.
13:03And will eat almost anything she brings them.
13:11Anything.
13:24Feeding in this bird-like way takes a lot of refills.
13:30So, she's constantly leaving to go find food.
13:36And when moms are away, little ones will play.
14:05With the wingspan of a fighter jet, pterosaurs are now bigger.
14:11than ever.
14:15And crèches are the perfect hunting grounds.
14:19Where unguarded nests are the easiest pickings.
14:24And with the wingspan of an enemy.
14:27And the mothans will change the wings.
14:34But, they don't even know how to live and kill the twins.
14:37And will be the most accurate.
14:39But, they will be the most accurate.
14:43But, they are the most accurate.
14:44Despite the threat from this towering monster, the mothers will defend their babies at all costs.
15:07But the giant pterosaur is determined to feed.
15:20The screams from the nest are like a dinner bell to the predator.
15:40But the little ones aren't just crying in fear.
15:45They're calling for help.
16:06This fierce instinct to protect their young is central to the Hadrosaur's remarkable success.
16:18But other dinosaurs are taking defense to a whole new level.
16:26Because the arms race between predator and prey is escalating.
16:33And this will give rise to the most iconic dinosaurs of all time.
16:45This will take so long that the continent of North America will shift.
16:53The land buckling up into the sky.
17:06The Rocky Mountains.
17:10It's here in the foothills below that the dinosaurs are making an impact.
17:28Pachycephalosaurus.
17:31Using their outrageously thick skulls to duel for supremacy.
17:45Pachycephalosaurus.
17:46And alongside them, a dinosaur with even more impressive headgear.
18:00Pachycephalosaurus.
18:03Pachycephalosaurus.
18:09Pachycephalosaurus.
18:10Pachycephalosaurus.
18:11Pachycephalosaurus.
18:11Pachycephalosaurus.
18:12Pachycephalosaurus.
18:12Pachycephalosaurus.
18:13Pachycephalosaurus.
18:15Pachycephalosaurus.
18:18Pachycephalosaurus.
18:20Pachycephalosaurus.
18:21over one meter in length.
18:33Triceratops and Pachycephalosaurus
18:35have impressive weapons.
18:40Yet there are some here
18:43that are even more armed and dangerous.
18:58Under the cover of darkness,
19:00the latest and greatest of the armored warriors.
19:07Six meters long and highly territorial.
19:16Ankylosaurus, Magnaventris.
19:26He's on patrol for intruders.
19:31Bold enough to breach his borders.
19:43His tank-like torso is covered
19:45in dozens of thick, bony plates.
19:54And what's more,
19:57he has a powerful new weapon.
20:04A club-like tail,
20:06weighing half a ton,
20:09that he can use to take on
20:11whatever stalks these forests.
20:13— He senses something.
20:22—
20:22Aaaaaaah!
20:51His borders have been breached.
20:55By the worst possible intruder of all, a Tyrannosaurus rex.
21:14A Tyrannosaurus rex.
21:19A Tyrannosaurus rex.
21:21A Tyrannosaurus rex.
21:28A Tyrannosaurus rex.
22:06A Tyrannosaurus rex.
22:08A Tyrannosaurus rex.
22:39A Tyrannosaurus rex.
22:43A Tyrannosaurus rex.
22:43A Tyrannosaurus rex.
22:53An evolutionary stalemate.
22:55A Tyrannosaurus rex.
23:19But in this arms race, there's one thing that does set these dinosaurs apart.
23:31Intelligence.
23:47To be continued...
24:14T-Rex is one of the most fearsome predators of all time, and to remain at the top of
24:24her game, she must eat the equivalent of 200 steaks every day.
24:34And yet, so far, she hasn't eaten a single bite.
24:43That's because she has special plans for this takeout meal.
24:53But ankylosaurus is no light snack.
25:05Six tons of muscle and bone, with an assortment of lumps and bumps.
25:25Even for T-Rex, it's quite a drag.
25:29T-Rex, it's quite a drag.
26:05Finally, her journey's end, and the reason she's gone through all this effort…
26:34Five hungry hatchlings…
26:50A ferocious killer?
26:53Yes.
26:55But also, a devoted mother.
27:15She will ensure… her little ones are well fed.
27:25To give them the very best start in life.
27:33Something their distant ancestors could only dream of.
27:42Far back in the Triassic, tiny Marasuchus hatched into hell.
27:50These dinosaurs in the making, forced to live in the shadows, hiding from the ruling reptiles.
28:03But when fate intervened, they turned catastrophe into opportunity.
28:15And began their monumental rise.
28:21Growing bigger, stronger, and ever more formidable.
28:34In time, they would triumph, not just on land, but in the sea and the sky.
28:47After 160 million years, the dinosaurs are now so dominant, nothing on earth can stand in their way.
29:06But something not of this earth will.
29:12Because as this family's journey is just getting started, another journey is approaching its end.
29:27The asteroid, now hurtling towards earth at 50 times the speed of sound, will finally have its date with destiny.
30:03The asteroid is now on earth.
30:12It smashes into the ocean off the coast of Mexico
30:18with the power of a billion atomic bombs.
30:24Temperatures are hot enough to vaporize the seabed.
30:30Along with every living thing for hundreds of kilometers.
30:44Far away in the foothills of the Rockies,
30:48these great dinosaurs have no idea what's about to hit them.
31:16The largest earthquakes in history.
31:29But the worst is yet to come.
31:34An enormous wall of superheated debris explodes outward.
31:57The dinosaurs caught beneath this death cloud are entombed.
32:07Their world is so hot, it literally bursts into flames.
32:21Even the toughest armor is no protection.
32:35The cloud quickly engulfs the entire planet.
32:40Suffocating it with ash.
32:44Shrouding it in darkness.
32:47Shrouding it in darkness.
33:03Shrouding it in darkness.
33:10Shrouding it in darkness.
33:32The few still standing at the end of the day
33:38are in a nightmare, choking in the gloom.
34:11By nightfall, the death toll for the dinosaurs is catastrophic.
34:47Starved of the sun's rays, an impact winter descends on the earth.
35:00Global temperature is dropped by 25 degrees Celsius.
35:08Conditions too cold for almost any dinosaur to withstand.
35:27Giant sauropods laid to rest in the cinders of the buried trees that made them so tall.
35:52In their crowded colonies, those who lived together died together.
36:08Protective mothers cannot shield their young from their freezing temperatures.
36:20The punishing cold has also taken its toll on the most famous dinosaur of all.
36:36The tyrant king has fallen.
37:01Even the mighty tyrannosaurus rex will not survive this.
37:08Even the mighty tyrannosaurus rex will not survive this.
37:13By the way, the
37:39The reign of the dinosaurs has finally come to an end.
38:16But 66 million years later, the dinosaurs are rising again, this time at our hands.
38:41Today, their fossils stand as monuments to a lost world.
38:48But more than that, they are the keys that unlock the secrets of the dinosaur story.
38:59Our understanding of their lives is now greater than ever.
39:04From their very first moments to their very last.
39:14And the revelation that on Earth's darkest day, not all dinosaurs died.
39:24Some were small enough to find shelter from the apocalypse.
39:33And survive even to this day.
39:40The flying dinosaurs we now call the birds.
39:50And the clues to their past are hiding in plain sight.
40:17The remarkable journey that started 235 million years ago continues.
40:27Alongside us.
40:31They are the last remaining link.
40:35To a long lost kingdom.
40:39That was the age of the dinosaurs.
40:46Of course.
40:47Of course.
40:47Of course.
40:54Today.
40:55Unfortunately something.
40:56Of course.
40:59Of course.
41:16To a long lost soul.
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