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.
02:01In The End
02:14To be continued...
02:45To be continued...
03:25To be continued...
03:50To be continued...
03:53Creating endless coastlines...
03:59Hundreds of tropical islands...
04:05And opportunity...
04:19But these islands are no paradise...
04:26They are home to a formidable predator...
04:34One of the fastest...
04:36Most agile dinosaurs of its kind...
04:43North America's answer...
04:46To the Spinosaurus...
05:00Just...
05:00Just...
05:00Not in the way you would think...
05:04Not even remotely...
05:08This is Hesperonis...
05:11He is formidable...
05:15And he is fast...
05:20But he is pretty much...
05:22The opposite of his giant...
05:24Terrifying cousins...
05:35He's awkward...
05:37And clumsy...
05:41And has tiny teeth...
05:44Not exactly the traits...
05:46Of a ferocious hunter...
05:49But what he does share...
05:51With Spinosaurus...
05:53Is that he's not confined...
05:56To dry land...
06:04In fact...
06:06He's the most advanced...
06:08Aquatic dinosaur...
06:09In history...
06:17Like some sort of...
06:19Prehistoric penguin...
06:22He's able to swim...
06:23Far out the sea...
06:25To access feeding grounds...
06:28That were previously...
06:30Out of reach...
06:51This...
06:52Is the bounty...
06:54Of his new...
06:55Blue realm...
07:05Down here...
07:07His big plums at feet...
07:08...become powerful propellers.
07:14And his 94 needle sharp teeth...
07:18...snatch fish with ease.
07:37But as an air breather...
07:40...he's still tied to the surface.
07:55And the surface...
07:57...is not a safe place to linger.
08:04Because below...
08:06...there are beasts.
08:09Twice the size...
08:11...of a killer whale.
08:21Mulsasaurs.
08:29The apex predators...
08:31...of the seas.
08:41Pesperonis must get back to the shore.
08:50But the Mulsasaurs...
08:52...moves with frightening speed.
08:56Luckily...
08:58...Hesperonis...
08:59...is much more agile.
09:07But he's exhausted.
09:12Which gives the Mulsasaurs...
09:15...one last shot.
09:36Asperonis...
09:37...is a true survivor.
09:40Venturing further...
09:42...into the ocean...
09:43...than any dinosaur ever has.
09:46Asperonis...
09:49But these waters are treacherous, even for the best swimmers.
10:03Despite the dinosaur's success in the shadows, the mosasaurs rule the waves.
10:19800 miles north, on land, it's a different story.
10:37Furelled by a warm, stable climate, the dinosaur's dominance here is unrivaled.
10:53The great sauropods are thriving among the tall trees, as 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...
11:54Who are somewhere...
11:55Down there.
12:08Long 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.
12:39There in the safety of the creche.
12:43A sprawling nursery for hundreds of young hadrosaurs.
12:51Including her own.
12:58At six months old, they 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.
13:35And when mons are away...
13:39Little ones...
13:40Will play.
14:05With the wingspan of a fighter jet, pterosaurs are now bigger.
14:15And crèches are the perfect hunting grounds, where unguarded nests are the easiest pickings.
14:43Despite the threat from this towering monster, the mothers will defend their babies at all costs.
15:07But the giant pterosaur is determined to feed.
15:19The 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.
17:14The fall of the forest.
17:17It's here in the trove.
17:18The islands of theflies.
17:18The confusants are being caught.
17:34It's here in the forest.
17:46And alongside them, a dinosaur with even more impressive headgear.
18:00Triceratops.
18:10She may look like a rhinoceros, but she's twice the size of one.
18:19And armed with spear-like horns over one meter in length.
18:32Triceratops and Pachycephalosaurus have impressive weapons.
18:40Yet there are some here that are even more armed and dangerous.
18:58Under the cover of darkness, the latest and greatest of the armored warriors.
19:06Six meters long and highly territorial.
19:15Ankylosaurus, Magnaventris.
19:26He's on patrol for intruders.
19:31Bold enough to breach his borders.
19:42His tank-like torso is covered in dozens of thick, bony plates.
19:54And what's more, he has a powerful new weapon.
20:04A club-like tail, weighing half a ton.
20:09That he can use to take on whatever stalks these forests.
20:19He senses something.
20:23Oh, my God.
20:51His borders have been breached by the worst possible intruder of all.
21:12A Tyrannosaurus Rex.
21:21...
21:29...
21:43Let's go.
22:03Let's go.
22:35Let's go.
22:40Ankylosaurus versus T-Rex.
22:53An evolutionary stalemate.
22:56Millions of the years in the making.
23:19But in this arms race,
23:23there's one thing that does set these dinosaurs apart.
23:31Intelligence.
23:31Intelligence.
24:00Intelligence.
24:14T-Rex is one of the most fearsome predators of all time.
24:22And to remain at the top of her game,
24:27she must eat the equivalent of 200 steaks every day.
24:35And yet, so far, she hasn't eaten a single bite.
24:43That's because she has special plans for this takeout meal.
24:54Ankylosaurus 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.
25:29It's quite a drag.
25:30It's quite a drag.
25:33It's quite a drag.
26:03It's quite a drag.
26:04Finally, her journey's end.
26:17And 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.
27:16She 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.
27:56Hiding from the ruling reptiles.
28:03But when fate intervened, they turned catastrophe into opportunity.
28:15And began their monumental rise.
28:22Growing bigger, stronger, and ever more formidable.
28:34In time, they would triumph.
28:38Not 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.
29:40From...
29:54The asteroid, now hurtling towards her.
29:55The asteroid, now hurtling towards her.
30:03The central asteroid, now hurtling towards her.
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.
32:49Shrouding it in darkness.
32:52Shrouding it in darkness.
32:56Shrouding it in darkness.
32:57Shrouding it in darkness.
33:01Shrouding it in darkness.
33:01Shrouding it in darkness.
33:02Shrouding it in darkness.
33:04Shrouding it in darkness.
33:04Shrouding it in darkness.
33:05Shrouding it in darkness.
33:05Shrouding it in darkness.
33:05Shrouding it in darkness.
33:05Shrouding it in darkness.
33:06Shrouding it in darkness.
33:06Shrouding it in darkness.
33:06Shrouding it in darkness.
33:06Shrouding it in darkness.
33:06Shrouding it in darkness.
33:07Shrouding it in darkness.
33:09Shrouding it in darkness.
33:11Shrouding it in darkness.
33:32The few still standing at the end of the day
33:38are in a nightmare, choking in the gloom.
34:11My 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.
37:07The trailing Aussie
37:39The reign of the dinosaurs has finally come to an end.
38:18The reign of the dinosaurs has finally come to an end.
38:18A billion years later, the dinosaurs are rising again, this time at our hands.
38:41Today, their fossils stand as monuments to a lost world.
38:47But 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.
39:05From 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...
40:24...continues alongside us.
40:30They are the last remaining link...
40:34...to a long lost kingdom...
40:39...that was...
40:41...the age...
40:44...of the dinosaurs.
40:46Ohharus.
40:47How wass?
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