0:00:02 > 0:00:03If you thought you knew
0:00:03 > 0:00:08all there was to know about dinosaurs, think again.
0:00:08 > 0:00:10This is Planet Dinosaur Files,
0:00:10 > 0:00:13the series that rewrites the prehistory books.
0:00:13 > 0:00:18We are bringing to life the most awesome beasts to walk the Earth.
0:00:18 > 0:00:21With state-of-the-art CGI technology
0:00:21 > 0:00:25that makes you feel like you're right there.
0:00:25 > 0:00:29And I'll be discovering what made these massive,
0:00:29 > 0:00:32lethal and frankly bizarre beasts tick.
0:00:32 > 0:00:34I'll be getting in a spin
0:00:34 > 0:00:39in the Planet Dinosaur Files wing challenge. Prepare for liftoff.
0:00:43 > 0:00:49In the last 20 years, scientists have discovered more dinosaurs
0:00:49 > 0:00:52than in all the centuries that have gone before.
0:00:52 > 0:00:55Amazing new discoveries.
0:00:59 > 0:01:03They reveal a jaw-dropping cast-list of creatures.
0:01:05 > 0:01:11Bigger, weirder, deadlier than we'd ever imagined.
0:01:11 > 0:01:15And this time on Planet Dinosaur Files, I'm asking the question,
0:01:15 > 0:01:20which was the best flying predator in the prehistoric world?
0:01:29 > 0:01:33You might think you know about prehistoric creatures,
0:01:33 > 0:01:37like the huge 12-tonne plant-eater, diplodocus.
0:01:40 > 0:01:44Or the mighty Tyrannosaurus rex, a savage predator,
0:01:44 > 0:01:48who dominated on land for almost five million years.
0:01:49 > 0:01:53But who ruled our planet's skies?
0:01:55 > 0:01:59Prepare to meet the new prehistoric flyers on the block.
0:02:03 > 0:02:09Like microraptor, a nimble tree-climbing hunter.
0:02:09 > 0:02:11Small but deadly,
0:02:11 > 0:02:16with an amazing ability to leap and glide from branch to branch.
0:02:19 > 0:02:25Or sinornithosaurus, another graceful glider.
0:02:25 > 0:02:28Cunning and camouflaged with a lethal secret weapon.
0:02:30 > 0:02:34And the truly enormous hatzegopteryx,
0:02:34 > 0:02:37with the wingspan of a fighter jet,
0:02:37 > 0:02:40a massive, savage beak.
0:02:40 > 0:02:43A brutal, terrifying killer.
0:02:43 > 0:02:47Three extraordinary creatures,
0:02:47 > 0:02:50all amazing new discoveries.
0:02:52 > 0:02:57I'll be looking at what goes into making a top prehistoric flyer.
0:02:59 > 0:03:02First up, no surprise here, flying.
0:03:02 > 0:03:05All of these creatures have wings.
0:03:05 > 0:03:09But how do they use them to move through the air?
0:03:09 > 0:03:12Next, hunting. All our flyers are predators.
0:03:12 > 0:03:14How do they catch their prey?
0:03:16 > 0:03:20And weapons. What have they got in their locker
0:03:20 > 0:03:23for either defence or attack?
0:03:23 > 0:03:27Let's look at our first high-flyer.
0:03:44 > 0:03:47Meet microraptor.
0:03:52 > 0:03:57Less than a metre long, a titchy dinosaur with bird-like feathers.
0:03:57 > 0:04:02But those flesh-ripping teeth show this was a predator.
0:04:02 > 0:04:06Grabbing and snatching prey was its speciality,
0:04:06 > 0:04:09which explains why its name means small robber.
0:04:11 > 0:04:15And this prehistoric lizard called xianglong
0:04:15 > 0:04:17could be microraptor's next meal.
0:04:17 > 0:04:21Micro raptor is a dinosaur, but like a bird,
0:04:21 > 0:04:25it spends most of its time up in the trees.
0:04:25 > 0:04:29Its claws have evolved to help its grip trunks and branches.
0:04:32 > 0:04:36Microraptor lived 120 million years ago
0:04:36 > 0:04:39in an area of the world that's roughly where China is today.
0:04:41 > 0:04:46And microraptor's resemblance to a bird is no coincidence.
0:04:51 > 0:04:55Every bird alive today is descended from the dinosaurs.
0:04:55 > 0:04:58From magpies, seen in any back garden,
0:04:58 > 0:05:02to these massive ostriches on the plains of Africa.
0:05:02 > 0:05:06Their feathers, claws, beaks and even their skeletons
0:05:06 > 0:05:10have a lot in common with the features of many dinosaurs.
0:05:13 > 0:05:18Unlike ostriches, of course, microraptor was well-suited to
0:05:18 > 0:05:23chasing prey in the trees, but just when it's closing in on dinner,
0:05:23 > 0:05:27xianglong, the prehistoric lizard, has a surprise in store.
0:05:31 > 0:05:36I bet he didn't see that coming. Amazing! A lizard with wings!
0:05:37 > 0:05:40But two can play at that game.
0:05:47 > 0:05:51Those feathers aren't just for keeping warm or show,
0:05:51 > 0:05:53this dinosaur can fly.
0:05:53 > 0:05:58Well, glide at least, by leaping from the tree branch like xianglong.
0:06:04 > 0:06:08And there are also creatures today who do just the same.
0:06:08 > 0:06:13This lizard, a flying dragon in the jungles of Borneo, south-east Asia,
0:06:13 > 0:06:16uses its wings to escape from a tight spot.
0:06:17 > 0:06:21And if you think that's weird, how about a flying snake?
0:06:21 > 0:06:24Your eyes aren't deceiving you.
0:06:24 > 0:06:28It just turned its whole body into one long, gliding wing.
0:06:32 > 0:06:35But what made microraptor
0:06:35 > 0:06:40so good at gliding is that it has not just two wings, but four,
0:06:40 > 0:06:44not to mention a long tail that helped to balance it in the air.
0:06:51 > 0:06:56How can we be sure that microraptor had these extraordinary wings?
0:06:56 > 0:06:59By taking a look at the evidence, that's how.
0:07:02 > 0:07:06This beautifully preserved fossil is of microraptor.
0:07:06 > 0:07:11Found in China in 2000, it revealed something amazing.
0:07:11 > 0:07:14This was a dinosaur with the flight feathers of a bird
0:07:14 > 0:07:16on both its arms and legs.
0:07:20 > 0:07:24That proved microraptor really had four wings,
0:07:24 > 0:07:28like a glider aeroplane, with its two main long wings
0:07:28 > 0:07:33and two smaller tail fins. All microraptor needed to glide
0:07:33 > 0:07:37was a high branch to jump from and it was away.
0:07:49 > 0:07:54Time to wing our way to the workshop to find out more.
0:07:54 > 0:07:58We know microraptor was a gliding dinosaur,
0:07:58 > 0:08:01but how good a glider could it have been?
0:08:01 > 0:08:06To investigate that, we've built ourselves a microraptor wing.
0:08:06 > 0:08:10This from the records we could get hold of is pretty much
0:08:10 > 0:08:13the shape we reckon the real thing would have been.
0:08:13 > 0:08:18We've also made our own version of a classic machine
0:08:18 > 0:08:22for testing wing shapes. It's called a whirling arm.
0:08:22 > 0:08:25Put the wing in at one end and then at the other end,
0:08:25 > 0:08:30we've got a counterbalance, a weight at the other end to keep it level.
0:08:31 > 0:08:37Perfectly balanced. The next step is to start it spinning.
0:08:37 > 0:08:40Once the wing starts moving through the air,
0:08:40 > 0:08:43it should, if it's a wing, start getting lift.
0:08:45 > 0:08:50That's the force a wing feels when it pushes through the air.
0:08:50 > 0:08:54Lift is what keeps anything that flies up in the sky,
0:08:54 > 0:08:57from birds to aeroplanes.
0:08:57 > 0:09:02With our rig, the more lift it gets, the higher it's going to go.
0:09:02 > 0:09:05With a flying dinosaur, the more lift that gets,
0:09:05 > 0:09:07the longer it's able to glide.
0:09:07 > 0:09:11And to get it spinning, we've got that massive weight
0:09:11 > 0:09:14and the idea is that weight is going to get pulled up to the ceiling
0:09:14 > 0:09:18and then it starts unwinding the string
0:09:18 > 0:09:22that's round the central pole, making this spin pretty quickly.
0:09:22 > 0:09:25To measure how much lift I'm getting,
0:09:25 > 0:09:28I've got my special flying gauge.
0:09:28 > 0:09:33Let's wind up that big weight, ready for my microraptor wing.
0:09:33 > 0:09:37I want to know whether this creature was a first-class flyer.
0:09:37 > 0:09:41The weight's ready, the wing is set on the end of the arm,
0:09:41 > 0:09:42let's see how this glides.
0:09:46 > 0:09:50Look at that! As soon as that wing starts gliding through the air,
0:09:50 > 0:09:54it starts generating lift and that arm is noticeably going up.
0:09:54 > 0:09:57You can see why microraptor was a good glider.
0:10:00 > 0:10:03I'm going to go and stop it.
0:10:05 > 0:10:07There we go.
0:10:07 > 0:10:11That wing definitely achieved lift as it was gliding through.
0:10:11 > 0:10:16On my scale, I've got it just coming out of economy, up towards business.
0:10:16 > 0:10:23But remember, microraptor had four wings, two on each side of its body.
0:10:23 > 0:10:26Let's see what difference that makes to the way it glides.
0:10:29 > 0:10:34Microraptor's extra wing gives it a boost straightaway.
0:10:38 > 0:10:43In our experiment, it appears that extra wing does make a difference.
0:10:43 > 0:10:48We managed to nudge microraptor out of being an economy-class glider
0:10:48 > 0:10:50up into business class.
0:10:54 > 0:10:58That's microraptor then. Brilliant in the air
0:10:58 > 0:11:00and nifty up trees.
0:11:03 > 0:11:06For flying, it was quick. A swift glider.
0:11:08 > 0:11:12Hunting, it crept up on its prey by climbing trees.
0:11:14 > 0:11:17And weapons? Well, for chasing prey that could fly,
0:11:17 > 0:11:21it had that little bit extra - four wings.
0:11:23 > 0:11:28But microraptor wasn't the only flying predator in the forest.
0:11:35 > 0:11:41This is sinornithosaurus, a close relative of microraptor but bigger.
0:11:44 > 0:11:49Its weird-sounding name means Chinese bird-like dinosaur.
0:11:49 > 0:11:53It lived in the same forests of China as microraptor.
0:11:53 > 0:11:58This odd-looking fellow had a reputation as a meal stealer.
0:11:59 > 0:12:04But here, sinornithosaurus isn't after that lizard.
0:12:04 > 0:12:07It's after microraptor.
0:12:16 > 0:12:19Suddenly, the hunter has become the hunted.
0:12:19 > 0:12:23For some predators, their prey can be another predator.
0:12:23 > 0:12:27Sinornithosaurus, like microraptor,
0:12:27 > 0:12:31was a feathered tree-climbing predator with wings.
0:12:31 > 0:12:33It could also glide from tree to tree.
0:12:33 > 0:12:35But when it comes to flying,
0:12:35 > 0:12:38there's a difference between these dinosaurs.
0:12:38 > 0:12:44Sino has just two wings, compared to microraptor's four.
0:12:44 > 0:12:46But sino's wings are larger.
0:12:56 > 0:13:00So back in the dinosaur workshop, I've got a new wing to test.
0:13:00 > 0:13:03That's my sinornithosaurus wing
0:13:03 > 0:13:06attached to the end of my whirling arm.
0:13:06 > 0:13:09I'm going to drive it around with the same falling weight
0:13:09 > 0:13:14as we had for the microraptor and see how it performs as a glider.
0:13:16 > 0:13:21Remember, microraptor's extra leg wing pushed it into business class.
0:13:21 > 0:13:26Sino's not got that extra wing, but the one it has is bigger.
0:13:26 > 0:13:28Which will work best?
0:13:31 > 0:13:35It's getting a decent amount of lift.
0:13:35 > 0:13:39But look at it alongside microraptor's performance.
0:13:39 > 0:13:42It's close, but not rising to quite the same height.
0:13:49 > 0:13:51There we go.
0:13:51 > 0:13:55The sinornithosaurus with this kind of wing is producing a lift,
0:13:55 > 0:13:57quite noticeable lift.
0:13:57 > 0:14:00But on my scale, it is only just coming out of economy class.
0:14:00 > 0:14:04It's not into business class yet. It's pretty simple.
0:14:04 > 0:14:07If one wing gives you a bit of lift,
0:14:07 > 0:14:10there is every chance that two will give you even more.
0:14:18 > 0:14:22So, on flying, it's advantage microraptor
0:14:22 > 0:14:25in the search for my top prehistoric flyer.
0:14:25 > 0:14:29But to be a successful tree-hunting predator
0:14:29 > 0:14:31was not just about gliding ability.
0:14:33 > 0:14:37These dinosaurs also had to operate on the forest floor
0:14:37 > 0:14:40because gliders, of course, have to land.
0:14:42 > 0:14:45And down here, the tables are turned.
0:14:45 > 0:14:49Microraptor's extra wings on its legs were a great advantage
0:14:49 > 0:14:51when gliding but they slow it down
0:14:51 > 0:14:53when it has to move quickly on the ground.
0:14:53 > 0:14:59Sinornithosaurus, with no awkward wings on its legs, is quicker
0:14:59 > 0:15:02and is gradually catching microraptor.
0:15:15 > 0:15:18But sino just misses out.
0:15:18 > 0:15:21A lucky escape for microraptor.
0:15:27 > 0:15:31Sinornithosaurus hasn't given up on dinner yet though.
0:15:31 > 0:15:35It had other tricks up its sleeve, like camouflage.
0:15:39 > 0:15:42Using camouflage is what some feathered creatures
0:15:42 > 0:15:44do in the wild today.
0:15:44 > 0:15:48Look at this. It's a potoo bird.
0:15:48 > 0:15:51It lives in the rainforests of Brazil in South America.
0:15:51 > 0:15:56Its grey colour means it can blend in with this tree trunk.
0:15:56 > 0:15:59And when it shuts its eyes and beak,
0:15:59 > 0:16:02it makes its body look like just another tree branch.
0:16:04 > 0:16:07It's doing this to hide from possible danger.
0:16:11 > 0:16:16Camouflage can be just as handy for hunting as it is for hiding.
0:16:18 > 0:16:23Our sinornithosaurus is using its camouflage to help stalk prey.
0:16:23 > 0:16:28Here, it's following this family of small plant-eating dinosaurs
0:16:28 > 0:16:31called jeholosaurus.
0:16:31 > 0:16:34It's hoping it can get close to one of the youngsters
0:16:34 > 0:16:38without the mother knowing and get itself a meal.
0:16:41 > 0:16:44This is the chance it's been waiting for.
0:16:53 > 0:16:58Suddenly, the mother jeholosaurus comes back to defend its kid.
0:17:05 > 0:17:10But what she didn't need was sino reinforcements arriving.
0:17:10 > 0:17:12Now she's outnumbered.
0:17:12 > 0:17:16And there's another weapon these predators can call on.
0:17:16 > 0:17:21A bite with a hidden deadly ingredient - venom.
0:17:21 > 0:17:26How do we know this? By taking a look at the evidence, that's how.
0:17:29 > 0:17:33These are the fossilised teeth of a sinornithosaurus.
0:17:33 > 0:17:37They're very similar to these grooved gnashers
0:17:37 > 0:17:42which belong to a creature called a gila monster.
0:17:43 > 0:17:45Here's one in the wild.
0:17:45 > 0:17:50And you really wouldn't want to be bitten by it.
0:17:51 > 0:17:56This deadly lizard lives in desert areas of the USA.
0:17:56 > 0:18:00The gila monster produces venom behind its teeth,
0:18:00 > 0:18:04a lethal liquid it uses to poison its prey when it bites.
0:18:04 > 0:18:08Dinosaur experts reckon that sinornithosaurus
0:18:08 > 0:18:11had the same kind of vicious bite.
0:18:11 > 0:18:14A gliding dinosaur with a poisonous bite,
0:18:14 > 0:18:17that's a really deadly combination.
0:18:19 > 0:18:22So, that's sinornithosaurus,
0:18:22 > 0:18:25another impressive treetop swooper.
0:18:27 > 0:18:30For flying, not quite up to microraptor's level,
0:18:30 > 0:18:33but still a good glider.
0:18:33 > 0:18:36Hunting-wise, it could sneak up on prey
0:18:36 > 0:18:38with the help of its camouflage.
0:18:39 > 0:18:44And weapons? Its bite was made more deadly by that lethal venom.
0:18:46 > 0:18:49Both the dinosaurs we've seen so far could fly.
0:18:49 > 0:18:53But their flying was limited to gliding from tree to tree.
0:18:53 > 0:18:57And remember, I'm looking for the ultimate flying predator.
0:18:57 > 0:19:01The prehistoric flyers that seem most astonishing to me
0:19:01 > 0:19:04are the ones that could take off from the ground
0:19:04 > 0:19:07and stay in the air for hours on end.
0:19:16 > 0:19:19Creatures like hatzegopteryx.
0:19:23 > 0:19:26This mind-blowingly massive beast
0:19:26 > 0:19:30patrolled the skies 65 million years ago.
0:19:30 > 0:19:33At that time, Europe was made up of lots of islands,
0:19:33 > 0:19:35one of which was called Hatzeg,
0:19:35 > 0:19:38which is how this monster gets its name.
0:19:38 > 0:19:41And it really is a monster.
0:19:46 > 0:19:49Hatzegopteryx was over five metres tall
0:19:49 > 0:19:53and had an enormous 10-metre wide wingspan.
0:19:55 > 0:19:58That's as big as this modern jet fighter.
0:20:00 > 0:20:06Hatze is a kind of prehistoric flying reptile called a pterosaur.
0:20:06 > 0:20:10It's one of the largest flying creatures ever known.
0:20:14 > 0:20:18This was truly an incredible flying machine.
0:20:18 > 0:20:22It could glide like microraptor and sinornithosaurus
0:20:22 > 0:20:25but it had the muscles for powered flight,
0:20:25 > 0:20:29so it could flap those colossal wings and take off where it liked.
0:20:32 > 0:20:36Usually, the long-necked sauropods were the biggest beasts in town.
0:20:36 > 0:20:40Here, though, they're dwarfed by hatzegopteryx.
0:20:40 > 0:20:44How do we know that a flying reptile could actually get this big?
0:20:44 > 0:20:48By taking a look at the evidence, that's how.
0:20:55 > 0:20:59These are the fossilised footprints of a pterosaur,
0:20:59 > 0:21:02very like hatzegopteryx.
0:21:02 > 0:21:09Discovered in 2002, they measure a massive 35 centimetres across,
0:21:09 > 0:21:13proving that these creatures could be huge.
0:21:13 > 0:21:16Imagine if hatzegopteryx were around today.
0:21:16 > 0:21:22It would be three times bigger than the world's largest flying bird,
0:21:22 > 0:21:24the wandering albatross.
0:21:24 > 0:21:29And when it landed on the ground, it would be as tall as a giraffe.
0:21:34 > 0:21:37Take a look at this condor from South America.
0:21:37 > 0:21:40This bird glides a bit like hatze.
0:21:40 > 0:21:45A condor's wings take advantage of warm air currents called thermals.
0:21:45 > 0:21:48They help it stay in the air for hours on end.
0:21:48 > 0:21:52Dinosaur experts believe pterosaurs like hatzegopteryx
0:21:52 > 0:21:54could do the same.
0:22:02 > 0:22:07Stunning in the air, what was hatzegopteryx like on the ground?
0:22:07 > 0:22:12Well, despite appearances, it was surprisingly effective.
0:22:12 > 0:22:16Those fossilised footprints show that hatzes
0:22:16 > 0:22:19could comfortably walk on all fours
0:22:19 > 0:22:23because they had a second pair of feet of the joint of their wings.
0:22:23 > 0:22:25And on Hatzeg island,
0:22:25 > 0:22:29it was by far and away the biggest creature around.
0:22:34 > 0:22:39Look at it alongside these small plant-eating magyarosaurs.
0:22:39 > 0:22:43These sauropods are actually very similar
0:22:43 > 0:22:48to the most massive dinosaur ever, argentinosaurus.
0:22:48 > 0:22:51The big difference is in size.
0:22:51 > 0:22:54Fully-grown magyarosaurs were about the size of a pony,
0:22:54 > 0:22:59a staggering 70 times smaller than their South American cousins.
0:23:00 > 0:23:03On Hatzeg, there was not enough food to fill up big plant-eaters
0:23:03 > 0:23:08and this is why magyarosaurs ended up being so small.
0:23:08 > 0:23:11But that made them the perfect prey
0:23:11 > 0:23:14for a much bigger predator like hatzegopteryx.
0:23:20 > 0:23:24But like lots of other prehistoric predators we've seen,
0:23:24 > 0:23:27hatzegopteryxes were likely to squabble over a meal
0:23:27 > 0:23:32with their rivals, which is lucky for this magyarosaurus.
0:23:39 > 0:23:42But these hatzes won't go hungry for long,
0:23:42 > 0:23:46as they can quickly take flight in search of more food.
0:23:59 > 0:24:05Back to my whirling arm in the Planet Dinosaur Files workshop.
0:24:05 > 0:24:09This is a hatzegopteryx wing.
0:24:09 > 0:24:13They were a force to be reckoned with, on the ground and in the air
0:24:13 > 0:24:17and it could take off of its own right, flap its wings
0:24:17 > 0:24:19and rise to the skies.
0:24:19 > 0:24:22Also, it was huge.
0:24:22 > 0:24:26We could never get a real-size hatzegopteryx wing
0:24:26 > 0:24:31to be flinging around in here. We have had to scale things down a bit.
0:24:31 > 0:24:34This is about a fifth of its length.
0:24:34 > 0:24:37To make it a fair test, I am not going to try and flap this wing,
0:24:37 > 0:24:40we're going to let it glide like we did with the others.
0:24:40 > 0:24:43Hopefully we will get an idea
0:24:43 > 0:24:47of how effective these different wing styles are for gliding flight.
0:24:47 > 0:24:53Remember, microraptor did well with that extra wing,
0:24:53 > 0:24:58while sinornithosaurus was not quite such a good glider.
0:25:00 > 0:25:05Hatze, like sino, had two wings. So how will it do?
0:25:07 > 0:25:09Look at it soar!
0:25:09 > 0:25:14Hatzegopteryx is a surprisingly good glider.
0:25:14 > 0:25:19Watch it beside microraptor. Even at one-fifth its real size,
0:25:19 > 0:25:22it's definitely getting more lift.
0:25:22 > 0:25:26That wing's a classic aerodynamic shape for flying.
0:25:26 > 0:25:30It seems two wings can be more effective than four,
0:25:30 > 0:25:34if they are the right shape. There we go.
0:25:34 > 0:25:38That was without a doubt getting well into business class.
0:25:38 > 0:25:41But, and it is a big but,
0:25:41 > 0:25:45this dinosaur had the option of powered flight as well.
0:25:51 > 0:25:57That's hatzegopteryx, a gigantic pterosaur with huge wings.
0:26:00 > 0:26:04So how does the amazing hatzegopteryx measure up
0:26:04 > 0:26:07to our other new prehistoric flyers?
0:26:09 > 0:26:13There was microraptor, a brilliant tree-climbing predator.
0:26:15 > 0:26:19For flying, it was quick through the air, a swift glider.
0:26:19 > 0:26:20Hunting?
0:26:20 > 0:26:25Remember, it locked on to prey with its tree-climbing skills.
0:26:25 > 0:26:30And weapons? It had a crucial edge with those four wings.
0:26:31 > 0:26:33Then sinornithosaurus,
0:26:33 > 0:26:38another forest-dwelling dinosaur that swooped from tree to tree.
0:26:39 > 0:26:42Flying? Not quite the standard of microraptor,
0:26:42 > 0:26:46but still a good glider. What about hunting?
0:26:46 > 0:26:50Using its camouflage was a great way of getting dinner.
0:26:50 > 0:26:55And weapons? A vicious bite was made more deadly by that lethal venom.
0:26:57 > 0:27:02And finally, that terrifying tongue twister,
0:27:02 > 0:27:04the incredible hatzegopteryx.
0:27:06 > 0:27:12Flying? This enormous pterosaur had a wingspan as wide as a fighter jet.
0:27:12 > 0:27:15For hunting, this monster was versatile.
0:27:15 > 0:27:18Stunning in the air but brutal on the ground.
0:27:18 > 0:27:20And weapons?
0:27:20 > 0:27:24That huge three-metre beak was perfect for snapping up prey.
0:27:26 > 0:27:31But which of these high-flyers is going to be king of the air?
0:27:31 > 0:27:35It's small versus large, camouflage versus climbing,
0:27:35 > 0:27:39venom versus versatility.
0:27:39 > 0:27:43It's a tough one to call this week, but my winner, just,
0:27:43 > 0:27:47is the magnificent hatzegopteryx.
0:27:48 > 0:27:52In the end, that all-round flying brilliance swung it for me.
0:27:58 > 0:28:02Next time on Planet Dinosaur Files, we go weird.
0:28:02 > 0:28:06I turn myself into a very strange creature
0:28:06 > 0:28:09and test a dinosaur egg to destruction.
0:28:09 > 0:28:12Argh!
0:28:12 > 0:28:15E-mail subtitling@bbc.co.uk