How to pronounce “tyrannosaur” in English

tyrannosaur.

Tyrannosaurs filled that job.

- ...Tyrannosaurus rex tooth.

'cause I do work on tyrannosaurs.

It was a dinosaur-- it's a tyrannosaurus rex, and it was found under 1,000 cubic yards of rock.

that time, Tyrannosaurs were not very special. They just simply weren't. For most of that time, Tyrannosaurs were basically my size. Now, the very first Tyrannosaurs we see are from the

that we have is that there's a few species of Tyrannosaurs that have been found in bone beds.

But they want to do a 30 foot tall Tyrannosaurus Rex.

it or not, the fossils show that the Tyrannosaur family goes back more than 100 million years before T. Rex.

But there is some evidence that Tyrannosaurs were pack hunters.

There were other close Tyrannosaur relatives at the top of the food chain in Asia, but south of the equator in South America, in Africa, it was totally different

And these bone beds, they have only bones of the same species of Tyrannosaur, of many different individuals from juveniles up to adults.

can see it on this one quite well, and that this is actually not a tyrannosaur, this is an ornithomimosaur.

well and and it's really like the opportunity of seeing you know it's like hey look Tyrannosaurus Rex is around the corner and we can go check him out you

their eyes because that's how futuristic this place is it's amazing what I'm seeing here and I love the Tyrannosaurus

First of all, we can see that over the course of Tyrannosaur evolution, Tyrannosaurs started small. First Tyrannosaurs were the size

There's a Tyrannosaur that's more than 30 feet long and weighed more than a ton and feathers all over its body.

So there were some tyrannosaur-inflicted bite marks on a duckbill

Then later on in the Cretaceous, they're gone, are mostly gone, and you have Tyrannosaurs and other major groups.

where we do a lot of our fieldwork. But there are better fossils of that age from China. And these very first Tyrannosaurus, like Guanlong from China, these lived about 165 to 170 million years

Now, over the course of the Jurassic, Tyrannosaurs stayed pretty small.

So it seems that being smart may have helped Tyrannosaurs

And it's undeniable that at least some Tyrannosaurs had feathers all over their bodies.

- T. rex is definitely weird, even compared to all the other giant tyrannosaurs that are very closely related to it, because it is by far, ludicrously by far, the largest carnivore in its ecosystem.

So yeah, they are truly unusual in that regard, even actually compared to a lot of the other very big tyrannosaurs, they're often a kind of step above

The claws look big and curved, and they are, but other tyrannosaurs, and indeed other carnivores generally,

Early tyrannosaurs don't have this.

actually very similar to what we see with modern carnivores, and it's not far off what we've seen even with things like tyrannosaurs, where you occasionally

predators even like, quote, super predators, like Tyrannosaurus, they're still real animals. If you get injured and you can't hunt, that's probably the end of you. So you don't want to

- So the ones we've found, you've got them from Alberta down to probably New Mexico. There's some... I want to say there's some tyrannosaurine, so

over time. Pythons, and elephants, Redwood trees, and lotuses, ancient tyrannosauruses, saber toothed tigers,

Australia, is all the big mammals disappeared. What would have happened in that counterfactual world would have been that a Tyrannosaurus going down under a hail of arrows and spears,

that 7- or 8-piece figure, one of the adult fans who was at that convention in Michigan built a Tyrannosaurus Rex out of Duplo bricks. And he wasn't bragging; he was just much better.

fast at it. I mean, my arm was like this one's gigantic and this one was like skinny and, you know, this one's like a tyrannosaurus rex. But, you know, it's tiring though, you

Except one day, you're standing in San Francisco and on the Berkeley Hills you see a Tyrannosaurus Rex on the horizon. And you're one of the few people that knows

Some of the other early Tyrannosaurs were just the size of lapdogs.

We've got big tyrannosaurs