Dinosaurs ruled the planet
for over 150 million years.
They occupied almost every corner of the globe
and came in almost every shape and size imaginable.
Some were truly extraordinary.
We now know that T. rex was a powerful swimmer.
Velociraptors were cunning, feathered hunters,
and that some dinosaurs had the most bizarre behavior.
But new discoveries are being made almost every day
that tell us more about life on this planet 66 million years ago.
This time on Prehistoric Planet,
we reveal new animals
and new insight into their quest to find a partner,
the challenges faced by raising a family
and their titanic battles.
Journey to a time when nature put on its greatest show.
尽在《Prehistoric Planet 2》
This is Prehistoric Planet 2.
The mouth of a river in southern Europe 66 million years ago.
In the aftermath of a tropical storm, debris is drifting downstream.
And amongst the wreckage, rafts of vegetation ripped from the land.
For a weary pterosaur, this one may be a welcome place to rest...
but it's far from safe.
A huge mosasaur, a deadly underwater hunter,
is looking for an easy meal.
Such as this little dinosaur, Zalmoxes.
Staying here is too risky.
He needs a larger raft, and quickly.
There's little choice but to swim for it.
He is not the first here.
Their raft is drifting out to sea.
Sometimes, castaways on rafts like these
are washed up on the shores of the distant islands.
If they're very lucky, this pair could become pioneers.
And may establish a new population, which eventually becomes a new species...
unlike anything seen before.
The longer an island has been isolated,
the more different its animal inhabitants may become.
These small islands in southern Europe
are home to a strange, rather shy hadrosaur.
Feeding amongst these pine saplings, Tethyshadros.
Just a quarter of the size of its giant cousins on the mainland,
it stands no taller than a human being.
With its unique serrated bill, it can forage among the tough vegetation.
Hunters like T. rex have never reached this little island,
so it should be a safe place for a mother to raise her brood.
But not necessarily.
Giant predatory pterosaurs.
The best chance of escape is beneath the canopy of the taller trees.
These small calves have been left behind among the saplings.
Mother and young are separated.
Hatzegopteryx are very intelligent pterosaurs.
Now that the element of surprise has gone, they change tactics.
Spreading out across the clearing,
they try to flush out any prey that might still be there.
The youngsters' best hope is to stay completely still...
and not to run.
These two are lucky to be back with their mother.
The island-hopping pterosaurs move on to try their luck elsewhere.
The hadrosaurs can return to feeding.
The island of Madagascar has been separated
from the African mainland for 80 million years.
So long that most of its animals are now very different
from any to be found elsewhere.
This is Simosuchus.
It's not a dinosaur but a miniature relative of crocodiles.
One that lives almost entirely on land
and is strictly vegetarian.
Simosuchus have tough, armored bodies which protect them from attack
by the island's predators.
So they can risk dropping their guard...
Majungasaurus, Madagascar's top hunter.
This particular female is blind in one eye,
so she finds it hard to make a kill, and she's now very hungry.
The Simosuchus have a network of escape routes
that lead them to their underground burrows.
进入后 它们就用 长有厚实甲片的背部堵住洞口
Once inside, they block the entrance with their heavily armored backs.
This little male is unlucky.
But he's not helpless.
Reverse charges, tail swipes and aggressive kicks.
The hunter's snout is too broad to reach very far inside.
然而 为了安全起见 这只狮鼻鳄还是将洞挖得更深
But just to be on the safe side, the Simosuchus digs even deeper.
For the Majungasaurus, yet another hunt has ended in failure.
Simosuchus is not the only evolutionary oddity to thrive on Madagascar.
The island is also home to another group of very unusual animals.
This is a female Adalatherium.
She's less than two feet long.
But even so, she's still one of the largest mammals to have yet evolved.
She spends most of her waking hours searching for food.
At the end of this tunnel, there are eggs...
potentially a rich source of protein.
But she doesn't eat this particular clutch.
These are her own eggs.
And this is her burrow.
The eggs are starting to hatch.
The hatchlings' eyes have not yet opened,
but instinctively, they head towards their mother to feed on milk.
She produces it from modified sweat glands on her belly,
and for now, it's all the food they need.
两个月后 幼崽的体型 变成了之前的四倍还多
Two months later, and the cubs have more than quadrupled in size.
To produce enough milk for them,
their mother must herself eat a great deal.
因此 每天晚上 它必须离开安全的巢穴去觅食
So every night, she has to leave the safety of the den in order to feed.
Her eyesight, like that of many burrowing animals,
is not very sensitive.
She relies instead on her acute hearing.
And if she hears something that might be dangerous,
she stays perfectly still.
She returns to searching in the earth for roots and seeds.
The cubs are growing fast and so are their appetites.
The female is now having to search almost nonstop for food.
So her cubs are left unguarded for hours at a time.
And one particularly well-adapted for catching burrowing prey.
With its long neck and narrow head,
it can investigate any hole that might contain a meal.
But hunters may themselves become the hunted.
玛德松纳蛇 身长近7.6米 会将猎物紧紧缠住直至死亡
Madtsoia, a snake nearly 25 feet long, squeezes its prey to death.
This neighborhood has now become rather dangerous.
As night falls, the mother leads her young out of the burrow for the very first time.
For now, at least, they must stay close together.
In the far south of the planet, on the islands of the Antarctic Peninsula,
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