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80 millions years ago,
two dinosaurs,
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a crested Protoceratops and
sharp-clawed Velociraptor,
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fought to the death.
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00:01:03,900 --> 00:01:07,800
Somehow, as they died in
the sands of the Gobi desert,
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their battle was
frozen in time.
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The Velociraptor
flat on its back,
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its clawed arm caught in the
jaws of the Protoceratops.
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An extraordinary fossil.
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A mysterious glimpse of life and
death in the age of dinosaurs.
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For more than
150 million years,
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dinosaurs roamed every
corner of the planet.
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Only a very few left
evidence of their existence,
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their fossilized bones.
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00:02:11,050 --> 00:02:15,150
And those bones never
sees to fascinate us.
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Dinosaurs came in
amazing shapes and sizes.
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Some were the largest animals
ever to walk the Earth.
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00:02:44,500 --> 00:02:48,700
Paleontologists, the scientists,
who study prehistoric life,
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00:02:48,950 --> 00:02:52,850
are discovering more dinosaurs
now, than ever before.
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00:02:54,150 --> 00:02:57,650
And this fossil evidence is
allowing them to reconstruct
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not only their
strange skeletons,
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but also their lives.
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00:03:04,550 --> 00:03:07,750
An example is this gigantic
long-necked plant-eater,
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known as Seismosaurus.
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Found in New Mexico,
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it lived during
the Jurassic Period,
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150 millions years ago,
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when many dinosaurs grew
to unprecedented size.
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Seismosaurus means
"earth-shaking lizard",
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and there's no doubt,
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that their footsteps echoed
across the Jurassic landscape.
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Measuring 110 feet
from nose to tail,
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it is one of the longest
dinosaurs ever discovered.
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Strangely, when
it was excavated,
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some 240 smooth,
round stones were found
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in and around its
huge stomach cavity.
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00:03:57,350 --> 00:03:58,750
Some scientists believe,
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Seismosaurus swallowed
stones to help its digestion.
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00:04:02,000 --> 00:04:04,200
Others say, that
finding the stones
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was a coincidence, that they
were part of the riverbed,
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where Seismosaurus
was found.
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00:04:18,050 --> 00:04:21,850
Seismosaurus weighed
over 30 tons,
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00:04:22,100 --> 00:04:24,700
as much as 8 elephants.
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It must have consumed
hundreds of pounds
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of vegetation every day.
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Sometimes scientists can
even learn, what dinosaurs ate.
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From clues they left behind
in their fossilized dung.
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Dinosaurs were first discovered
in Europe and America.
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But in the 20th century,
scientific explorers struck out
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for the most remote
corners of the Earth.
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And a full extend in the dinosaur
kingdom began to be revealed.
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The Gobi desert spans
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a half-million square
miles of Mongolia and China.
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The ancient land
of Genghis Khan.
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Beneath sands, that camel
caravans traversed for centuries,
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lay a vast treasure
trove of fossils.
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Undisturbed for more
than 70 million years,
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that would forever change
our view of dinosaur life.
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00:05:53,400 --> 00:05:56,500
In 1920s, a
team of scientists
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from the American Museum
of Natural History
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set out to explore
the little-known Gobi.
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00:06:02,700 --> 00:06:06,200
Their leader was
Roy Chapman Andrews.
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00:06:13,750 --> 00:06:17,350
Andrews and his team traveled
in a fleet of automobiles.
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00:06:17,600 --> 00:06:20,500
It was one of the
first major expeditions
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used motorized
transport in Central Asia.
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To keep his
expeditions supplied,
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when the nearest gas station
was 1000 miles away,
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he came up with a novel plan.
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Sending out camel
caravans in advance,
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loaded with food and fuel.
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And the camels provided an
unexpected service to the expedition.
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Hair, plucked from
their shedding winter coats
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was ideal for
packing fragile fossils.
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Mongolia was
a dangerous place,
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full of roving bandits.
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But Andrews thought to be
the inspiration for Indiana Jones,
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00:07:01,150 --> 00:07:03,850
reveled in the
adventure of it all.
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Never again will i have such
a feeling as Mongolia gave me.
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All this thrilled
me to the core.
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Somewhere in the depths
of that vast silent desert
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lay those records of the past,
that i had come to seek.
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Andrews fended off the bandits,
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but he and his team could not
avoid the violent sandstorms,
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that often sweep
across the Gobi.
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To their amazement,
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they found that each new storm
uncovered a wealth of bones.
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Dinosaurs bones
never before seen,
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and perfectly preserved
in the desert sands.
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00:08:00,150 --> 00:08:02,550
Mark Norell and
Mike Novacek
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00:08:02,600 --> 00:08:04,300
of the American
Museum of Natural History,
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00:08:04,500 --> 00:08:07,500
following in Andrews' footsteps,
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have been leading
expeditions to the Gobi
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every year since 1990.
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Fascinated by dinosaurs
in their youth,
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Mike and Mark have become
renowned paleontologists.
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They have dug dinosaurs
all over the world,
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but they have made their
most spectacular finds here,
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in the Gobi Desert.
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Dr. Julia Clark has arrived in
Mongolia's capital Ulaanbaatar,
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with graduate students Alan
Turner and Amy Balanoff
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to prepare to this
year's expedition.
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They are part of a team,
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that will join Mike and
Mark in the desert.
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This will be my sixth
summer in the Gobi.
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Mongolia has proven
so rich in fossils,
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i know, that each year,
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there will be great
new finds to be made.
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There are few paved
roads outside Ulaanbaatar.
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The team's destination
in the western Gobi
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is a minimum of
three days' driving.
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00:10:14,450 --> 00:10:18,850
A "Mad Max" journey
over hot, dusty plains
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and through mountain passes.
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00:10:43,250 --> 00:10:47,150
In 1921, after months
of overland travel,
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Roy Chapman Andrews'
motor-caravan came across
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a strange and beautiful place
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of eroded canyons
and sandstone towers.
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The late-afternoon sun seemed
to set the rocks on fire.
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Andrews named it
the Flaming Cliffs.
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Here they would come upon
one of the greatest repositories
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of dinosaur remains
ever found.
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00:11:14,150 --> 00:11:16,050
More than 80 years later,
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00:11:16,300 --> 00:11:19,000
the Flaming Cliffs are still
a fabled and productive destination
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00:11:19,150 --> 00:11:21,250
for dinosaur hunters.
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00:11:26,900 --> 00:11:28,200
To find dinosaurs,
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00:11:28,450 --> 00:11:32,050
paleontologists must first
look in the right places.
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00:11:32,450 --> 00:11:35,950
They know, that fossils are
preserved in certain rock deposits.
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The only tool, they need
at first, is keen eyesight.
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Tiny white bone fragments
on the surface hint,
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at what can be an entire
dinosaur buried below.
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There's alot of bones in here.
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Always a good place.
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Hey, come check this out.
-Oh, what? - An egg.
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With decades of experience,
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00:11:57,300 --> 00:12:01,000
Mike and Mark readily spot
fossils and identify them.
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00:12:03,500 --> 00:12:05,700
For grad students Alan and Amy,
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00:12:05,850 --> 00:12:08,050
time in the field
is the best way,
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to develop their own skills.
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00:12:10,650 --> 00:12:13,450
This is my first time going to the
Gobi with Mark and everyone.
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I'm really excited and
happy to be a part of a tradition,
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that goes back to
Roy Chapman Andrews.
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00:12:20,250 --> 00:12:22,550
The Gobi expeditions
are a collaboration
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with the Mongolian
Acadamy of Sciences.
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This year, Mongolian grad student
Boldra Mingin joins the team.
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My father is a paleontologist.
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00:12:32,500 --> 00:12:35,800
And when he first showed me
a giant skeleton found in Mongolia,
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i couldn't believe,
such animals really lived.
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I have loved finding
fossils ever since.
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00:12:55,450 --> 00:12:58,550
Today, after only a
few hours of searching,
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the team uncovers
a fossilized skull.
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Julia is quick to recognize it as
that of a large, armored dinosaur.
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00:13:07,700 --> 00:13:09,100
It's called the Pinacosaurus,
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it was sort of a
heavy tank of its day.
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With experience, we can visualize,
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what fossils like this,
would have looked like in live.
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Pinacosaurus and its relatives,
like this Tarchia,
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were built for defence.
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Their backs bristled with rows
of hard, bony plates and spikes.
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Even their eyelids were armored.
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And their tails ended
in a massive bony club.
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One of Tarchia's few enemies
was the ferocious Tarbosaurus,
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whose bones have also
been found in the Gobi.
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Tarbosaurus was a close
relative of Tyrannosaurus Rex,
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and it was a top predator.
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It was 30 feet long
and weighet five tons.
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It had a super-sized bite
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with razor-sharp teeth
nearly six inches long.
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00:14:19,750 --> 00:14:22,050
Scientists have
debated for many years,
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how fast or slow these
big predators were.
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00:14:27,600 --> 00:14:30,800
This scale model of a
T-Rex skeleton reveals,
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how a massive two-legged,
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or bipedal dinosaur
might have moved.
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As they walked, they shifted their
entire weight from leg to leg,
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as humans do.
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Their large tales
helped to balance them.
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Their legs were
directly beneath their hips,
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allowing them to carry
more weight and move faster.
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Dinosaurs like T-Rex could have
reached speeds up to 25 mph.
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Faster than an average
human could run.
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Tarbosaurus was at the top of
the food chain in the area of Asia,
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that is now the Gobi Desert.
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But Tarchia was no wimp,
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and could use its tale club
to cripple or kill an attacker.
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In the 1920s,
the Andrews' expeditions
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found a number
of new dinosaurs.
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Their most important discovery
wasn't a ferocious predator.
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It was something rather small.
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But one of the great
dinosaur finds of all time.
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They find the
first dinosaur eggs.
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Lying in large round
nests in the ground.
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This amazing find confirmed,
that dinosaurs actually laid eggs.
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Andrews and his team believed,
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the eggs belonged
to Protoceratops,
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00:17:00,150 --> 00:17:03,450
because they found so many
of these dinosaurs in the Gobi.
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About the size of sheep,
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Protoceratops had a distinctive
head shield and a hook-like beak.
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On top of one nest, they
made a puzzling discovery.
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The skeleton of a bird-like
meat-eating dinosaur,
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definitely not a Protoceratops.
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00:17:21,650 --> 00:17:23,550
They concluded,
that it was a predator,
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00:17:23,800 --> 00:17:25,300
that had been
raiding the nest.
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00:17:25,500 --> 00:17:27,500
It was named Oviraptor,
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meaning "egg thief".
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It took 7 years to prove,
they were wrong.
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In 1993, Mark Norell made an
extraordinary find in the Gobi.
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A fossilized dinosaur embryo.
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We discovered,
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that it was the embryo of a
very close relative of Oviraptor.
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00:17:52,700 --> 00:17:55,400
In other words, the dinosaur
was not actually stealing the eggs,
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it was a good parent,
that was brooding them.
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00:17:59,900 --> 00:18:03,200
The discovery of Oviraptors,
preserved on their nests,
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00:18:03,350 --> 00:18:06,350
sheds new light
on these dinosaurs.
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They sat on their eggs,
just like modern birds.
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00:18:20,650 --> 00:18:22,650
Many of the Gobi dinosaurs
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00:18:22,900 --> 00:18:25,500
are in a remarkable
state of preservation.
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00:18:26,700 --> 00:18:30,300
Undisturbed by scavengers
or damaged by erosion.
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Not only Oviraptors,
but many others,
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00:18:34,400 --> 00:18:37,500
like the fighting dinosaurs.
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00:18:42,450 --> 00:18:46,150
And even a nest full of barely
hatched baby Protoceratops...
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00:18:46,600 --> 00:18:50,700
How did they die so suddenly,
and remain so intact?
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00:18:52,650 --> 00:18:54,550
Until recently, it was thought,
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00:18:54,800 --> 00:18:56,700
that sandstorms
buried these creatures.
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00:18:57,100 --> 00:19:01,300
New evidences suggests a much
more spectacular scenario.
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00:19:01,750 --> 00:19:03,050
During this expedition,
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00:19:03,300 --> 00:19:06,400
heavier than normal rainfall
flooded parts of the Gobi.
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00:19:06,600 --> 00:19:08,000
According to a new theory,
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00:19:08,150 --> 00:19:10,950
water and sand dunes
played a dramatic part
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00:19:11,200 --> 00:19:13,400
in preserving dinosaur remains.
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00:19:15,700 --> 00:19:18,400
Scientists now believe,
that every few centuries
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00:19:18,550 --> 00:19:23,550
rainstorms of immense power
swept down on this arid world,
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00:19:23,800 --> 00:19:27,200
with catastrophic effect.
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00:19:35,550 --> 00:19:38,350
The inhabitants could not
have known, what was coming.
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00:19:38,500 --> 00:19:42,100
A pair of speedy, aggressive
Velociraptors were on a hunt,
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00:19:42,350 --> 00:19:45,650
and approached a large group
of nesting Oviraptors.
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00:19:45,900 --> 00:19:50,500
But on this day, unaware, that
they are chasing their last meal.
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00:20:37,550 --> 00:20:40,450
Bones become fossilized,
when they are quickly buried,
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00:20:40,600 --> 00:20:43,700
protecting them from
weather and predators.
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00:20:43,950 --> 00:20:47,650
Over time, living tissues decay
and bone is replaced by minerals,
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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
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00:20:54,150 --> 00:20:56,550
to the understanding
of dinosaur life.
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00:20:56,550 --> 00:20:58,850
New evidence is
revolutionizing our view
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00:20:59,100 --> 00:21:01,300
of dinosaurs like Velociraptor.
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00:21:01,600 --> 00:21:04,600
Long thought to be
leathery-skinned or scaly,
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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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