Dracorex is the littlest one, Stygimoloch is the middle size one, Pachycephalosaurus is the largest one.

So there's these two dinosaurs, T. Rex and Nanotyrannus.

Which of course means that Stygimoloch and Dracorex are extinct.

We now call them non avian dinosaurs and avian dinosaurs.

The bone histology tells us that Edmontosaurus is a juvenile, or at least a sub adult, and the other one is an adult and we have an ontogeny.

Although the king of them all, Tyrannosaurus rex, lived millions of years after Borealopelta, the armoured dinosaur may have been hunted by some of its formidable ancestors.

We're not going to be able to make a dinosaur based on a dinosaur.

I mean, here's Edmontosaurus and Anatotitan.

It's a giant duck bill dinosaur.

And then there's this thing called Dracorex, Hogwart's Eye.

You'd have a big dinosaur and a littler dinosaur.

So if we cut open Dracorex I cut open our Dracorex and look, it was spongy inside, really spongy inside.

You can call it a dinosaur, but look at the velociraptor the velociraptor is cool.

And sure enough, Nanotyrannus has juvenile bone and the bigger one has more mature bone.

So I picked a Camarasaurus, because the Camarasaurus was the most abundant of the sauropods in North America.

Now if you want dinosaur DNA, I say go to the dinosaur.

And then Stygimoloch, another dinosaur from the same age, lived at the same time, has spikes sticking out the back of its head.

Here's the animal that was causing it trouble.

And the last one is T. Rex.

But they did look at these three and they said, These are three different dinosaurs, and Dracorex is probably the most primitive of them.

Fourth graders love their dinosaurs, they memorize them.

It wasn't a very complete T. rex, and it wasn't a very big T. rex, but it was a very special B rex.

So again, real easy to say that Tyrannosaurus ontogeny included Nanotyrannus, and therefore we can take out another dinosaur.

Peg Solitaire

Peg Solitaire

X Solitaire

AisleRiot Solitaire

The Dragon and the Bear

And I have been fortunate enough to find things like the first eggs in the Western hemisphere and the first baby dinosaurs in nests, the first dinosaur embryos and massive accumulations of bones.

FreeCell Solitaire

Penguin Freecell

Penguin Solitaire

Fallen Tiger, Shaken Dragon

I'm going to talk about a different aspect of dinosaurs, which is the finding of them.

So now we know that Torosaurus is actually a grownup Triceratops.

And he showed that if you were to take a baby and an adult and make an average of what it should look like, if it grew in sort of a linear fashion, it would have a crest about half the size of the adult.

Wool sticks on Velcro.

The chicken is a dinosaur.

Rise of the Triad

AisleRiot Solitaire

I loved dinosaurs.

Sharon s Triumph

The year of the dragon has ended.

Wu Hailong (China)

But there's another dinosaur that is found in this formation that looks like a Triceratops, except it's bigger, and it's called Torosaurus.