Argentinosaurus

Between 240 and 230 million years ago, the first dinosaurs that would dominate the planet for 150 million years appeared.

If you had been there, you would have seen the gigantic sauropod Argentinosaurus, the largest terrestrial animal that has ever existed.

Or maybe one of the largest super predators on Earth, the Tyrannosaurus Rex, would have hunted you.

y también habrías presenciado el rompimiento de Pangea y la formación de los continentes que conocemos hoy.

Biggest, we'll go today.

Let's just say Argentinosaurus is the longest.

Brachiosaurus or Giraffatitan could be the tallest.

And those are the biggest dinosaurs.

Argentinosaurus is also the heaviest dinosaur.

What do you call a sleepy dinosaur? A dino? Snore.

I could

We talked about ornithischians today.

[dinosaur roaring] You wanna learn about it today? So what was the biggest dinosaur? Well, we aren't completely sure of the answer because we're only going off of what we've found.

[keyboard clacking] I'm sure there are more fossils and more records to discover, but as far as we know, the biggest dinosaur was called Argentinosaurus.

[dinosaur roaring] Argentinosaurus was a kind of sauropod, and a sauropod is a giant plant-eating dinosaur with a long neck, and a long tail, and a small head, and four thick legs.

If you picture a dinosaur like Brachiosaurus, that's a sauropod, too.

[dinosaur roaring] But Argentinosaurus, it was the biggest one of them all.

At least, we're pretty sure.

[upbeat music] So how big was Argentinosaurus? Well, scientists think Argentinosaurus may have been around 100 feet long.

[upbeat music] That's like if you took three really big school buses and lined them up back to back to back.

All right.

This one's tough because what happens, you guys, when we get, uh, bones, like let's say Argentinosaurus, uh, we get their bones, you know, the, uh, the backbone, their spine, you know, we have all those vertebrae.

They didn't lock together.

You know, there's a little bit of space in between where there's all kinds of other bodily things.

they estimate how much space was in between those back vertebrae.

They estimate.

So that's why we get an estimate of, hey, Argentinosaurus could have been 110 to 120 feet long.

So we just get estimates.

The head needs the most power with that bite force.

In turn, the hands, they're not needed as much, okay? Let's see, what else do we got? What was the biggest dinosaur from Quinn? Quinn, you can answer that a few different ways, okay? I like to say, when we talk about plant eaters, Argentinosaurus, Brachiosaurus.

Brachiosaurus, one of the tallest, 50 to 60 feet.

Argentinosaurus, up to 130 feet long.

Three school buses long.

Or we can talk about meat eaters.

But the first dinosaur, one of the early ones, Herrerasaurus.

That's a very early theropod.

That's almost half the skeleton.

That's amazing, because a couple of other giant sauropods like Paralititan and Argentinosaurus, they only found 7% of Paralititan and only 5% of Argentinosaurus.

So what that means is if a skeleton has 100 bones, and they found 5%, that means they found only five bones from that skeleton.

With Paralititan, they only found seven bones of that skeleton.

I just getting ready to talk about it just a second ago.

Anyway, you have two dinosaurs that look very similar, but they're different enough, but they're similar enough to be in the same group.

So with Dreadnoughtus, it belongs to the titanosaur family, and that's where we have dinosaurs like Argentinosaurus.

Now, these were the largest, and they all showed up at the end of the Cretaceous.

And the, obviously the sun bears.

Argentinosaurus.

Right.

Wasn't it one of the biggest dinosaurs?

I think looking at Sora Poseidon and who else? Oh, my gosh.

Argentinosaurus and Perala Titan.

You know, here's something to think about.

I need to talk to Noah about this because Noah and I have really good conversations.

They were taller than buildings.

One of the largest known dinosaurs, the Argentinosaurus, was about as long and heavier than a commercial airplane.

Can you imagine what it was like when these animals walked the earth? But here's the thing, they did not walk it at the same time.

Really common misconception is that all dinosaurs lived all at the same time.