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Lost Worlds: The Giant Creatures That Ruled Earth Before Dinosaurs | Prehistoric Earth Documentary — Transcript

by WUFO TV · 2,234 words · 444 segments · language en · Watch on YouTube

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0:00This is the story of the dinosaurs.
0:06A world where creatures took on [music]
0:08bizarre otherworldly forms.
0:11Unlike anything [music] you have ever
0:13seen, they vanished completely without a
0:16trace, without clear descendants, and
0:20with no one left to remember them.
0:25To understand [music] why, we must turn
0:28back time to an era when life reached an
0:31entirely different limit.
0:42A world thick with moisture where the
0:45air is so dense that every breath feels
0:47heavier. Light filters through towering
0:50layers of vegetation and then a shadow
0:53glides overhead.
0:56Not a bird, not a bat. Something
0:59resembling a dragonfly,
1:01yet with a wingspan nearly as wide as a
1:04human arm.
1:09Beneath your feet, the ground trembles
1:11faintly as a creature up to 3 m long.
1:15like a colossal millipede slowly crawls
1:18across layers of decaying [music]
1:20leaves.
1:22This is Earth during the Carboniferous
1:24period, a forest from roughly 300
1:26million years ago, a world where excess
1:30oxygen gave rise to giants.
1:34Atmospheric oxygen levels reached
1:37approximately 30 to 35%. [music]
1:41compared to just about 21% today. This
1:44number is not merely a detail. It is the
1:48key.
1:51Oxygen is a direct limiting factor on
1:53body size, especially for insects and
1:56arthropods,
1:58organisms that breathe through a network
2:00of air fil tubes known as trachei
2:03[music]
2:03rather than lung.
2:07When oxygen concentrations increase, the
2:10diffusion of oxygen into [music] the
2:12body becomes more efficient,
2:15allowing tissues to receive enough
2:17energy to sustain bodies far [music]
2:19larger than today's limits would allow.
2:22That is why creatures like meura could
2:25exist.
2:26With wingspans [music]
2:28reaching around 63.5 cm,
2:33nearly three times larger than the
2:35biggest dragon flies alive today.
2:44Or arthroplura, an arthropod stretching
2:47up to 2.5 to 3 m in length. Considered
2:52one of the largest land invertebrates
2:54ever to exist.
2:59and insects filled that ecological
3:01space. They did not merely survive. They
3:04dominated. Large size brought
3:06advantages.
3:08Longer flight ranges, more effective
3:10[music] predation, and fewer threats.
3:15Giant bodies became less efficient. At
3:18the same time, the gradual emergence of
3:21new [music] animals faster, more
3:24intelligent, and better adapted began to
3:27introduce competitive pressure.
3:31Size, once an advantage, became a
3:34burden. So, what happens when an
3:37ecosystem once [music] ruled by giants,
3:39begins to face new predators
3:42faster and more precise?
3:52A shadow flashes past at astonishing
3:54speed, slicing through the dim, humid
3:57light of an ancient forest. [music] It
3:59is Megura, a giant dragonfly
4:02with a wingspan of about 63.5
4:06cm, but size is only the surface.
4:10Studies in aerodynamics and wing [music]
4:13structure suggest it could reach flight
4:15speeds of approximately 60 to 65 km per
4:18hour, comparable to many modern birds of
4:22prey.
4:26Its compound eyes, built from tens of
4:29thousands of tiny lenses, provide a near
4:33360°
4:34field of vision, a nearly absolute
4:38advantage when pursuing prey.
4:44And it does not hunt at random. Meganura
4:46is an active predator using [music]
4:48speed, rapid directional changes, and
4:51extraordinary vision to capture smaller
4:54insects midair.
4:59Some biological models estimate that to
5:02sustain its metabolism at this size, it
5:05may have needed to consume an amount of
5:07food equal to its body weight in less
5:10than an hour.
5:13That means the sky was not just a place
5:16to fly, but a constant battlefield
5:19where every movement could mean life or
5:22death.
5:27Not only in the air, the ground also
5:30witnessed a similar dominance. Pulmonus
5:33scorpius,
5:35an ancient scorpion reaching up to about
5:37[music] 70 cm in length, was one of the
5:41largest land predators of its time.
5:47With powerful pincers and venom, it
5:50could hunt other arthropods, even prey
5:52of considerable size. In a world without
5:55large reptiles or mammals, such
5:57creatures had virtually no true rivals.
6:02During the Carboniferous period, when
6:04oxygen levels reached approximately 30
6:07to 35%. [music]
6:09Insects grew to extraordinary sizes and
6:12[music] achieved a remarkable level of
6:14biological performance.
6:22Evolution does not create the strongest.
6:25It gives opportunity to those best
6:27suited to the environment at that
6:29moment.
6:35But what happens when the environment
6:37begins to change?
6:39When new organisms emerge faster, more
6:42agile, and equipped with advantages
6:44insects cannot possess?
6:56Look up at the sky. But this time,
6:59something has changed. It is no longer a
7:02space belonging solely to the delicate
7:04wings of giant insects.
7:08Another silhouette appears, gliding
7:11slowly, not flapping continuously,
7:14but drifting through the air like a
7:16living glider.
7:22Coilerosaurivus,
7:24a small reptile about 30 to 40 cm long.
7:28It did not possess true wings, but
7:31instead developed elongated bony
7:33structures extending from its ribs,
7:36forming a gliding membrane that allowed
7:38it to move between the treetops.
7:44This marked a critical evolutionary
7:46step. For the first time, insects no
7:50longer held exclusive control over
7:52three-dimensional space.
8:00But that was only the beginning. Around
8:03230 million years ago, a new group of
8:06creatures emerged. Flying reptiles known
8:09as terasaurs.
8:13Unlike anything before them, they
8:16possess true wings, a membrane of skin
8:19stretched from an extremely elongated
8:22fourth finger to the body and hind
8:24limbs.
8:29Early terasaurs had wingspans of only
8:32about 20 to 50 cm, comparable to giant
8:35insects. But over time, they evolved
8:38into massive creatures with wingspans
8:40reaching 10 to 14 m such as qualas,
8:45one of the largest flying animals ever
8:48to exist.
8:51Aerodynamic studies show that their wing
8:54structures were highly efficient at low
8:56wind speeds below approximately 40 km
9:00hour.
9:05This allowed them to travel long
9:07distances with minimal energy
9:09expenditure,
9:11a distinct advantage that insects could
9:14not achieve.
9:18While insects relied on continuous
9:20flapping, terasaurs could glide, harness
9:23air currents, and strike from above with
9:26remarkable precision.
9:32Between roughly 260 and 230 million
9:37years ago, after the Carboniferous
9:40period, ecosystems began to shift.
9:46Oxygen levels declined, climates
9:48fluctuated, and most importantly,
9:52new organisms began experimenting with a
9:54different strategy.
9:56Flight, not just through [music]
9:57flapping, but through gliding.
10:03One of the earliest examples was
10:05coellerosaurus,
10:07a small reptile [music]
10:09measuring about 30 to 40 cm in length.
10:12It did not have true wings, but evolved
10:15elongated rib structures that [music]
10:17supported a gliding membrane, allowing
10:20it to move between forest canopies.
10:27This marked a significant evolutionary
10:30milestone. For the first time, insects
10:33no longer dominated three-dimensional
10:35[music]
10:36space.
10:38Giant insects slowly lost their
10:41advantage. As oxygen levels dropped,
10:44large body [music] sizes became less
10:46efficient.
10:50As terasaurs [music]
10:51evolved, the skies were no longer safe,
10:54and ecological pressures began to shift.
10:57Being faster was no longer enough. It
10:59required greater efficiency.
11:05But the story does not end there. As
11:07terasaurs [music]
11:08began to dominate the skies, another
11:11group of organisms, smaller, more agile,
11:14and ultimately more dangerous, was
11:17quietly emerging.
11:26Something smaller, faster, and more
11:29dangerous is darting through the canopy.
11:32It is not just flying. It is controlling
11:35the air with near-perfect precision.
11:41For the first time in Earth's history,
11:43the sky becomes a tactical domain. And
11:46this is when birds emerge.
11:49[screaming]
11:54One of the most important pieces of
11:56evidence for this turning point is
11:57[music] Archopterics,
11:59which lived around 150 million years ago
12:02during the late Jurassic.
12:07This creature carried a striking
12:09combination [music] of traits. It had
12:11feathers and wings like modern birds.
12:14Yet, it still possessed sharp teeth,
12:17clawed wings, and a long [music] bony
12:19tail.
12:20features of dinosaurs.
12:27With a wingspan [music] of about 50 cm,
12:30Archaeopterics was not a powerful flyer,
12:33but it represented [music] something far
12:35more significant, an entirely new model
12:38of flight.
12:41Unlike terasaurs, which relied heavily
12:44on gliding,
12:46birds developed [music] active flapping
12:48flight with powerful chest muscles and a
12:51lightweight hollow skeletal structure.
12:58This allowed them to fly with agility,
13:01change direction rapidly, and control
13:04movement within tight spaces, especially
13:06in forests.
13:08This was an [music] advantage no flying
13:10organism before them had achieved.
13:16Modern fossil data based on the analysis
13:19of more than [music] 10,000 ancient
13:21insect specimens
13:24reveals a clear trend. After about 150
13:28million years ago, insect size began to
13:31decline. Even though atmospheric oxygen
13:34levels did not [music] decrease as
13:36significantly as before,
13:42birds do not just fly. They hunt with
13:45precision, [music]
13:46with sharp vision, rapid information
13:49processing, and highly flexible
13:51reflexes.
13:54Birds can pursue [music] and capture
13:56insects even in complex environments.
14:02A large body, once an advantage in the
14:04past, now [music] becomes an easy
14:06target.
14:08Smaller size means harder to detect,
14:10[music] more agile, and a greater chance
14:13of survival.
14:18The emergence of a new predator can
14:20reshape the entire structure of an
14:22ecosystem.
14:24Insects [music] did not disappear, they
14:26adapted.
14:31They are only one step in a long chain
14:33of evolution where each species stands
14:36on the shoulders of the one before and
14:39is eventually replaced.
14:45So when birds begin to dominate [music]
14:47the skies, what happens below on the
14:50ground?
14:53which organisms are quietly evolving,
14:56preparing for the next role in the
14:58history of life.
15:03This is not a story of the strongest. It
15:06is a story of the survivors. First, we
15:09return to the dinosaurs, but not the
15:12familiar giants.
15:16A discovery in 1996 completely changed
15:19how we see them.
15:22Sinuseropric
15:24fossils of this species reveal
15:26feather-like structures covering its
15:28body. A clear indication that feathers
15:31did not evolve for flight, but initially
15:34for insulation or display.
15:43This opens up a surprising truth. Many
15:46dinosaurs may have possessed feathers
15:48much earlier than we once believed.
15:57And then there is Udrannis, a predator
16:00weighing around 1.5 tons, nearly 9 m
16:04long, yet covered in a dense layer of
16:07feathers.
16:11Evolution does not move toward bigger or
16:14stronger. It moves toward better suited.
16:17At the same time, flight [music]
16:19continued to be explored in remarkable
16:21ways.
16:28Microaptor is a striking example. A
16:31small dinosaur with four wings,
16:35both on its arms and legs, allowing it
16:37to glide [music] between trees.
16:42or Ankoris [music]
16:44which lived around 160 million years ago
16:48even earlier than Archopterics showing
16:51that the evolutionary path of flight was
16:54not a straight line but a complex
16:56network [music] of experiments.
17:03But while dinosaurs were experimenting
17:05with the skies, another group of
17:08organisms chose a completely different
17:10path. Hidden, small, and highly
17:13adaptable early mammals.
17:19Eomea measured only about 15 cm in
17:22length, weighing around 20 to 30 [music]
17:25g. Yet, it carried fundamental traits of
17:28modern mammals, including more advanced
17:31reproductive [music] structures.
17:34Not all were small. Reponamus, reaching
17:38up to 75 cm in length, provides shocking
17:42evidence. Within its fossilized stomach,
17:45scientists discovered the bones of a
17:47baby dinosaur.
17:55This completely reverses the familiar
17:58image. Not all mammals were prey.
18:00[music] And then there is Volaticreum, a
18:03gliding mammal, showing that even
18:06mammals had begun experimenting with the
18:09air very early on.
18:13They did not dominate, but they learned,
18:15[music]
18:16adapted, and waited. And while the
18:19giants competed and gradually
18:21disappeared, smaller organisms quietly
18:24expanded,
18:26not through strength, but through
18:28flexibility. [music]
18:29But even this adaptation did not
18:31guarantee safety because a seemingly
18:35small change not from animals but from
18:38plants was about to overturn the entire
18:41ecosystem.
18:50Around 125 million years ago during the
18:54Cretaceous period a major biological
18:57turning point occurred. [music]
18:59the emergence and spread of flowering
19:01plants with early representatives such
19:03as archif.
19:06Unlike ancient plants like ferns or
19:09conifers, flowering plants grew faster,
19:12had shorter life cycles, and [music]
19:14produced greater biomass in a shorter
19:17time.
19:20As leaves and flowers fell, [music]
19:22especially in aquatic environments,
19:25ponds, lakes, swamps, they became a rich
19:29food source for decomposing
19:31microorganisms.
19:40Biogeeochemical studies show that
19:42enclosed or still water ecosystems,
19:47the increase in organic matter can
19:49significantly reduce oxygen levels,
19:52creating localized oxygen depletion
19:54[music]
19:55known as hypoxia.
20:03And this was the critical weakness of
20:05[music] ancient insects. Now imagine
20:08this happening on a global scale.
20:11Not just one region but millions of
20:13freshwater ecosystems [music] affected
20:15simultaneously.
20:18Not just one generation but thousands
20:20[music]
20:21even millions of consecutive generations
20:24disrupted.
20:31This was no longer ordinary selective
20:34pressure.
20:39This was a complete restructuring
20:41[music]
20:41of the biological chain from its very
20:44foundation.
20:54This was [music] a baseline
20:55environmental shift, silent yet
20:58absolute.
20:59Species that could not adapt [music]
21:01disappeared not because they were
21:03hunted, but because they could not
21:06[music] complete their own life cycles.
21:12And so [music]
21:14the insects that once dominated the
21:16skies,
21:18creatures that had endured hundreds of
21:21millions of years of change, were
21:23ultimately forced to give way.
21:33Not because they became weaker, but
21:36because the world around them had
21:37changed in ways they could no longer
21:40keep up with.
21:51The history of Earth is a sequence of
21:53nature's grand experiments.
21:56The creatures that once dominated did
21:58not [music] disappear at random.
22:04They were removed when they no longer
22:06aligned with the mechanisms of a
22:08changing environment.
22:12Evolution has no final destination. It
22:15is a continuous process of selection and
22:17restructuring
22:20where every extinction becomes the
22:22foundation [music] for the emergence of
22:23a new ecosystem.
22:28Looking back at the journey of lost
22:29worlds, [music] we recognize an
22:31objective reality. Life is an unbroken
22:34flow.
22:41It is only a temporary chapter within a
22:44much longer cycle
22:49where adaptation [music] remains the
22:51only key to avoiding being forgotten in
22:53the eternal passage of time in the
22:55[music] universe.
23:41Are you ready?
27:50There
28:19it was.
28:55Heat. Heat.
34:20Okay, there's
34:33Heat. Heat.
35:22How are you?
37:53Heat. Heat.
40:32Subscribe to Wuo TV and join us as we
40:35explore ancient Earth, uncover forgotten
40:38knowledge, and investigate the mysteries
40:40humanity has yet to fully Understand?

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