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

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

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

That's a juvenile.

But it's not dinosaur DNA.

It's a giant duck bill dinosaur.

228 million years old, we found what really is the most primitive dinosaur that's the Ur dinosaur.

So if you ever fantasize about going back in time and seeing what a dinosaur looked like, that's what a dinosaur looks like.

Dinosaurs The bird like dinosaur Troodon had a partially opposable finger.

This is a replica of a dinosaur's egg.

The tail of a dinosaur has been found trapped in amber.

Jack Horner Building a dinosaur from a chicken

And so here was the first soft tissue from a dinosaur.

So I said, OK, let's try to do this dinosaur project.

And if you cut into an older dinosaur, it's very massive.

You know, how why would a kid want a dinosaur?

Coming face to face with a dinosaur was a funny experience.

Brachiosaurus is the first dinosaur seen by the park's visitors.

Edmontosaurus ( ) is a genus of hadrosaurid (duck billed) dinosaur.

Reig named a second dinosaur from these rocks in the same publication as Herrerasaurus this dinosaur, Ischisaurus cattoi , is now considered a junior synonym and a juvenile of Herrerasaurus .

Now, to find dinosaurs, you hike around in horrible conditions looking for a dinosaur.

So we don't have to make a dinosaur because we already have them.

Lawrence Lambe named this dinosaur Gorgosaurus libratus in 1914.

So we have discovered that dinosaur DNA, and all DNA, just breaks down too fast.

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

And this is a you know, the purple dinosaur with kind of bloat wear.

The mode of Mesozoic dinosaur body masses is between one and ten metric tonnes.

It is one of the most complete dinosaur skeletons, and the most complete skull, ever recovered in Brazil.

Every museum wanted a little bigger or better one than anybody else had.

So if you cut open a little dinosaur, it's very spongy inside like A.

Unaysaurus is a genus of sauropodomorph dinosaur, and is one of the oldest dinosaurs known.

And that doesn't make any sense at all, because we don't know of any dinosaurs that gain teeth as they get older.

Now mostly tails limit maneuverability, like this human inside this dinosaur suit.

But cutting into the bones of a dinosaur is hard to do, as you can imagine, because in museums bones are precious.

The theme of this story is building a dinosaur, and so we come to that part of Jurassic Park.

If you look at dinosaur hands, a velociraptor has that cool looking hand with the claws on it.

The crazy idea is we're going to try to clone a dinosaur as much as we can with today's technology.

For example, Staurikosaurus is usually depicted with five toes and five fingers very simple features of an un specialized dinosaur.

Back in 1993 when the movie came out, we actually had a grant from the National Science Foundation to attempt to extract DNA from a dinosaur, and we chose the dinosaur on the left, a Tyrannosaurus rex, which was a very nice specimen.

Now we have a way of actually testing to see whether a dinosaur, or any animal, is a young one or an older one.

So here's a dinosaur that has spikes sticking out of its head, no dome and gnarly stuff on its nose.

I wanted to be a paleontologist, a dinosaur paleontologist, and I wanted to have a pet dinosaur.

Two topics of particular interest and study have been dinosaur size and behavior.

Saurornithoides ( ) is a genus of troodontid maniraptoran dinosaur, living during the Late Cretaceous period.

Saltasaurus (which means lizard from Salta ) is a genus of titanosaurid sauropod dinosaur of the Late Cretaceous Period.