(screeching) - That was a raptor. So if you asked someone
to name one dinosaur, they'd probably either
say a T-Rex, a raptor or a Stegosaurus and that's
because those are the ones that we learn about in
school and see in movies like Jurassic Park. But the reason that
they use those dinosaurs and not the lesser known dinosaurs isn't because they're more fun, it's because some of the
lesser known dinosaurs are just so weird that
some people might not believe that they actually existed. So this week, I gathered
the most bizarre ones to share with you guys. So here they are, the
10 weirdest dinosaurs you never knew existed. Number one is the Pegomastax. Well, doesn't he look friendly. The Pegomastax was a tiny herbivore that measured only two feet long that existed during the Jurassic period. It had a beak, razor
sharp teeth that sharpened themselves against each other and a body covered in quills. Apparently the quills
were there to intimidate predators as if it wasn't
enough that it looks like the demonic offspring of
a parrot and a porcupine. What's interesting is
that it was discovered 50 years ago but it was only
identified two years ago which means one of two things. Either it legitimately took them 48 years to identify its remains or
it really only took them two months and just no one wanted to go around this thing
for the rest of that time. I mean really could you blame them, damn. Number two is the Linhenykus. The Linhenykus was a small dinosaur that existed during the
late Cretaceous period and it was only a few feet in length. It's not of the bird
family despite its look and is best known for a
weird feature which is having freakishly short arms
that have these weird little claws at the end of them. Not only do they appear to
serve no purpose at all, but they're just ridiculous looking. I mean the T-Rex had short arms but at least he had hands. This thing's just got weird little nubs. It doesn't even appear to
have a defense mechanism which is weird because look at it. You know it got picked on. I wonder how it defended itself. Oh, you wanna take me out? Come on, I'll get ya. Number three is the Longisquama. The Longisquama is a
small lizard like reptile from the Triassic period. The Triassic period was the scariest time to be a small dinosaur
because of the sheer number of dangerously huge
carnivores that existed during that time. The advantage to being
small is that you could hide which really isn't an
option when you've got seven to eight colorful
appendages sticking out of your back that just scream hey, come and eat me. What's cool is that these appendages are believed to be primitive feathers suggesting that the
Longisquama could actually be a close relative of birds. But of course we'll
never know seeing as how very few in tact fossils
there are of these things. I mean they did get eaten a lot. They basically looked like
a walking fruit salad. Number four is the Gigantoraptor. The Gigantoraptor existed
during the Cretaceous period and was one of, if not the
biggest bird of all time. It was 16 feet tall, 26 feet in length, weighed two tons and
was most likely covered in colorful feathers. Scientists are baffled by
what its diet could've been because it had no teeth, a
small head and a long neck which is common of herbivores, but it also had two enormous sharp claws which are common of carnivores. Personally I have no idea. All I know is that this thing
looks like the world's biggest and angriest chicken. It's gonna peck at my nightmares. Number five is the Mamenchisaurus. The Mamenchisaurus was
a species of dinosaur that existed during the Mesozoic era that was most famous for their long necks. The really, really long necks. Making up more than half
of their total body length, their necks evolved to 35 to 40 feet long. As you could imagine, this was a problem for them because they had trouble keeping their own damn heads up. It couldn't even hold
its head in the treetops because it would pass
out as its heart would have trouble pumping
blood 40 feet in the air. This thing's like a bad
ass giraffe on steroids. Mother Nature's a mad scientist. Number six in the Jeholopterus. The Jeholopterus existed
during the Mesozoic era and has a face that might remind you of a cute little kitty until
you find out what it does. Actually do we have a more
representative picture? (laughs) Oh, yeah, there you go. This dinosaur was the Jurassic equivalent of a vampire bat which
flew around biting larger dinosaurs and drinking their blood. They had sharp double fanged jaws and were just over half a foot long meaning they were light
enough to attach undetected to most dinosaurs as they
sucked the life out of them. Now I know dinosaurs don't have a concept of evil but the Jeholopterus is as close as you're going to get. I mean look at that eyeball. He's staring into your soul. (eerie music) Number seven is the Suzhousaurus. The Suzhousaurus is from
the early Cretaceous period and is actually a relative
of the T-Rex despite being an herbivore and
looking like a giant rat. It had a body length of 20
feet, a height of 10 feet and a weight of 1.3 tons. It has a bizarre furry
body that's been compared to the Megatherium which
was a giant ground sloth. This is yet again one of
those evolutionary mysteries. I mean how does the
genes of the mighty T-Rex turn into a plant eating
sloth bodied dinosaur? Unless mama T-Rex was sleeping around. She obviously had a thing for them giant ground sloths, you know what I'm sayin'? But then again who doesn't, mm-hm. Number eight is the Incisivosaurus. Well here's an evolutionary reject. The Incisivosaurus was a
small omnivorous dinosaur with a body length of less than three feet that existed during the
early Cretaceous period. It had the face of a raptor,
the buck teeth of a rodent, the body of an ostrich and the
hands and feet of a chicken. So yeah it isn't winning
any beauty contests any time soon. It got its name due to
its prominent front teeth, but let's be honest, based
on the look on its face, I think the Derposaurus would've been a more appropriate title. Oh, a dinosaur. Number nine is the Sharovipteryx. The Sharovipteryx
existed during the middle to late Triassic period
and it is so weird looking that it almost seems like
an evolutionary mistake. It's the only glider
that evolved a membrane on its pelvis instead
of its pectoral girdle which is just a fancy way of saying it grew wings on its
legs instead of its arms. It's a lizard like reptile
that fed on insects as it glided from tree to tree. It sped up or slowed down depending on how it positioned its tail which is cool but I'm more interested in how it walked. My bet is that considering
how long its legs are, it was probably the
hunchback of the dinosaurs. Sanctuary. And finally number 10, the Helicoprion. Also known as whirl
sharks, the Helicoprion were a shark like fish that existed during the Permian period. Unlike modern sharks
that have serrated teeth that fall out and are
replaced by new ones, the Helicoprion's new teeth simply pushed old teeth forward which
continuously extended its jaw. Interestingly, they actually
survived the Permian, Triassic extinction event. However they eventually died off with the rest of the dinosaurs. Well, I'm just glad
this evolutionary trait didn't pass on to modern day sharks because trips to the aquarium as a kid would be a lot less fun
and a lot mroe scary. And there's the beach, and the movies Jaws. It would just screw up a lot of stuff. That's it for this video, guys. If you enjoyed it, you
should definitely check out my friend Hybrid Librarian. We actually did a video that's
up on his channel right now that's related to this one
called The Earth's 10 Most Important Events in History. I think you'll really like it. If you wanna check it out, I'll put a link in the description below. If you wanna add me to
Facebook and Twitter, the links for those will
be in the description along with all my other
social networking links. Other than that, I will
see you guys next Saturday with a brand new video. Peace. (playful music) Hey, welcome to the outro scene. Not to mama, yeah remember that? A bit of old school throwback. Thanks for watching my new video. If you enjoyed it,
please remember to click the big red subscribe button below to subscribe to my channel. I release a new video every Saturday and while you're at it,
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