The Scariest Animal During The Jurassic Wasn't A Carnivore...

The Late Jurassic Morrison Formation was one of the most brutal places to ever exist. You had giant sauropods and cannibalistic theropods roaming about, and still somehow, things got even crazier when you looked at some of the 'smaller' dinosaurs, with one herbivore in particular actually being more grisly then some of the predators around...

If you want more ExtinctZoo 🦖:

0:00 In A Land Of Giants, One Stands Alone…
1:08 Discovery & Misclassified as a what?!
2:42 Classification & Closely Related Dinosaurs
3:10 The 3 Different Stegosaurus Species + Differences
3:57 Body Size
4:30 Largest Known Specimen (+ Most Expensive Dino Ever)
5:00 Potential Predators
5:17 Its Giant Spikes & The Crazy Force They Packed
6:45 Evidence That It Killed Large Allosaurus
7:39 10% Of Stegos Had This…
8:17 Gular (Neck) Armor
9:08 Built-In Swiss Army Knife
10:30 The Smallest Brain To Body Ratio Of Any Dinosaur
11:13 A Second Brain… In Its Butt?
12:05 Herds Or Solo Life?
12:47 A Dentist’s Worst Nightmare
13:30 Range & Habitat
14:01 Animals It Lived Alongside
15:14 Super Droughts & Cannibalistic Theropods
15:47 Existence & Extinction

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[ianjones]

It's fascinating to think that Stegosaurus had already been extinct for 80 million years by the time T-Rex appeared. T-Rex only lived 66 million years ago, so that means we live closer in time to the T-Rex than it did to the Stegosaurus. Stegosaurus was already a fossil when T-Rex walked the earth. Stegosaurus was a true Jurassic icon. It wasn't a dinosaur to be messed with.

[rl]

“Today is a great day to make a theropod look like a giant walking piece of Swiss cheese.”
-Stegosaurus

[Rick]

I love how "thagomizer" started off as a joke Gary Larson made for one of his comics but actually became the real scientiffic name.

[Moony_Os]

R.I.P. Thag Simmons, who was the first to be Thagomized by the Thagomizer.

[rhedosaurus]

A Stegosaurus tail being swung at 90 mph?! I knew a direct hit would be devestating, but not with that much force. WOW.

[kitkatboard]

If Stegosaurus was alive today, we'd get dozens of stories of people getting stabbed because they wanted to pet an "innoffensive herbivore" every year

[eugenekhoo]

Who would win? A pack of Allosauruses, or you?

Stegosaurus: "If they managed to avoid the range of my tail, it might cause me a little trouble."

But would you lose?

Stegosaurus: "Nah, I'd win."

[joaopedrobaggio]

I love this channel, i am obsessed with pre-historic life since i was little boy. I am 36 years old now.

[wither]

Anything with gigantic spikes on it's tail and a brain the size of a walnut is going to be infinitely scarier then any carnivore to me. Herbivore dose not equal chill. I have seen how absolutely brutal non carnivorous animals can be so yeah I believe this video 100%

[HorstDeBepp]

Imagine if the Stegosaurus had the temperament of todays hippos, oh boy.

[christerprestberg]

I love how in almost every image, Ceratosaurus looks like it is on its third tour in Nam while cranked out on meth ^^

[gattycroc]

I remember when I was in kindergarten or first grade and one of helper teacher's favorite dinosaur was Stegosaurus because she brought it up every time we talked about dinosaurs. the Stego is truly an iconic dino.

[Redbeardblondie]

Your channel is definitely one of my top three favorite dinosaur channels. And the main reason why is because, along with your very professional and easy to listen to narration, you include such a diverse and voluminous list of Paleo-biota in the formations alongside the feature creature! I love your videos, please keep it up!

[XTP_X_The_Penguin]

MY POOR BOI CERATO IN THE THUMBNAIL 😭😭😭🙏🙏🙏

[ottodotbot]

It is criminal to not mention that the Thagomizer is quite literally named after a Far Side cartoon.

[The.Nasty.]

I am not fooled by the name “Thagomizer” because that does indeed sound like a weapon of destruction...

I imagine getting thagomized is akin to being disintegrated. 😂

[Megaturret]

R.i.p Thag Simmons 5:44 for his FAFO moment

[emperioszyrandios]

Honestly, I feels like i learnt something new today! Didn't realized that they actually have gular armor! What more, i thought the 'second' brian might have been feasible but woah!

[BrainletTheatre]

I love that Thagomizer has become adopted as the term for the Stegosaurus tail spikes. I have to imagine Gary Larson couldn't have imagined the reach that comic would have when he put pen to paper in 1982.

[FElectricEagle]

Ankylosaurus - Nothing beats a mace on the tail as a weapon for self defense!
Triceratops - Hold my three lances on my head.
Stegosaurus - Yawn! Wake me up when you have four warhammers on your tail.