UCMP 118742

Albertosaurus vs. Deltadromeus

Albertosaurus sarcophagus

Length: 33 feet (10 meters)
Weight: 3 tons
Era: Late Cretaceous
Location: North America

These carnivores live in family groups of up to five members. They have a warm and fuzzy coat of feathers and are found mainly in the northern mountain range, where they live together with Cryolophosaurus and Yutyrannus. They aren't built as robust as their close cousins, but due to their light build and their unusually strong hindlimbs they are exceptional sprinters. They even rival some of the Ornithomimids on the island. Their arms on the other hand are very small and barely usable, but their ultimate weapons are their jaws. Like all Tyrannosaurids, they have a very impressive bite. Their average bite force is anywhere between 1 and 3 tons.

Deltadromeus agilis

Length: 25 feet (7.5 meters)
Weight: 1.5 tons
Era: Mid Cretaceous
Location: North Africa

Deltadromeus are very fast and have a lot of endurance. Their jaws aren't very strong, but their teeth can cause large blood loss, their arms have three fingers with large claws which can rip open any hide and they can easily shatter bones and teeth with their powerful kicks. They are sometimes found in pairs, but usually live alone. They are mainly ambush hunters and hunt for Hadrosaurs, which they outrun, and Ornthomimids, which they chase until their prey is too exhausted to run away any further.

Fight!

A male Deltadromeus is sitting in a bush. He hasn't eaten anything for almost four weeks and is ready to attack anything and anyone. In front of him are two Albertosaurus. One male and one female. They have a nest set up with six eggs in it. The male stays back and waits near the nest, while the female goes away to hunt.

The male senses something and looks around cautiously. He can't see anything, but he can definitely smell something. He decides to ignore it until it either retreats or shows itself. He looks back to the nest and at that moment the Deltadromeus strikes.

He runs towards a rock next to the Albertosaurus. The tyrannosaur hears his footsteps and turns around, but before he can react, the Deltadromeus runs up the rock and jumps towards the Albertosaurus at full speed. The Deltadromeus is a bit too high to hit the Albertosaurus and so the Tyrannosaur thinks he's safe, but he underestimates the Deltadromeus.

In mid-air, the Allosaur kicks at the Albertosaurus' face as hard as he can. He lands quite a way away from his target and stumbles around a bit before focusing again. He turns around and looks at the Albertosaurus. It lies on the floor and isn't breathing, no wonder since half of his skull was kicked away.

The Deltadromeus disembowels the dead Albertosaurus and starts eating. He shoves his snout in between two ribs to get some of the intestines. He realizes that his snout is too big and struggles to get back out. Suddenly he feels a horrible pain in his neck. He screams into the body of the male Albertosaurus and manages to get his head out after violently struggling around.

He also get's out of the jaws of whatever was biting him. He jumps away and then takes a good look at his opponent. It's the female Albertosaurus and mate of the Albertosaurus he just killed. Blood is dripping from her teeth and her eyes are filled with anger and hatred.

She roars and instantly charges at the Deltadromeus. She hold's her head low and hit's the Deltadromeus which didn't react in time. She quickly jerks her head up and jumps a little while doing so. The much smaller Deltadromeus is tossed into the air and falls back down after almost three seconds. Every part of his body, which isn't numb, hurt's like hell.

He tries to stand up, but the female head butts him and shoves him for several metres until she pushes him into a tree and grabs his neck in her jaws. She swings him around wildly and then tosses him into another tree. The Deltadromeus falls to the ground and whimpers one last time before his eyes close. The female stares at him for several more minutes and then releases an ear splitting roar, but she doesn't know yet what she attracted by doing so...

Winner: Albertosaurus sarcophagus

The winner was pretty obvious and the fight was a bit short, but I didn't want her to be too wounded for her next fight.

Lord Vader

Jezza

Wow delta's got an ostrich kick. :|

UCMP 118742

That thing was pretty much an overgrown ostrich with sharp fangs and deadly claws. It wouldn't even surprise me if that thing's kick would rival the bite of a T.rex.

Lord Vader

The 9 ton PSI estimate or the stronger than Megalodon estimate? It wouldn't surprise me if a Delta did that kick and could give a good 6 ton PSI with a good hard kick (still a great deal of pressure considering estimates for Giga are 5 tons PSI for its bite).

Jezza

UCMP 118742

The 6-9 ton estimate.

Fun fact about the 20 ton bite force estimate: That is only on a perfect bilateral bite. Which is about as rare as a dinosaur mummy. I personally think that the average bite force would have been at 8-16 tons.

And Jezza: XD (A picture is worth more than a thousand words)

Lord Vader

That's what I figured. 8-16 tons ain't to shabby too considering at 6-9 tons PSI Rex had the highest bite force of any land animal.

UCMP 118742

It's pretty funny when you think about the highest bite forces in modern animals. Dinosaurs were truly one of the most amazing creatures to ever walk this planet. I wonder how strong the kick of a T.rex would've been?

Lord Vader

I know, and that's a good question. Considering you wouldn't be surprised if a Deltadromeus could do 6-9 PSI with its kick, that would be up to a 9 ton PSI kick from a 1.5 ton animal. It would kick with up to 6 times it's own weight of force, so using that formula with a 10 ton Rex, that would be a 60 ton PSI kick. I'd imagine it wouldn't be able to do near that much because it was rather slow and wouldn't have the agility to kick like that, so probably 20-30 tons PSI tops.

UCMP 118742

Yeah, probably around there somewhere. Interesting, how the bite of a T.rex wasn't even it's strongest weapon when it comes to brute strength, but a bite would definitely be more accurate than a kick and it would also depend on the situation and opponent if the kick even lands.

Lord Vader

Bite would certainly be its most powerful all around weapon, while a kick would be its most powerful. Usually though, unless it was on it's back and about to be bitten by something else, it probably wouldn't be able to get a good solid kick in.

UCMP 118742

There was a T.rex specimen with claw marks (from another T.rex) on it's skull, but there is no question that a bite would be more effective in almost every case.

Primal King

The perfect bilateral bite thing. Youre thinking of it as a max. Its really an average of 16-21 tons like the 7-10 ton estimate. But otherwise, I agree with all.

UCMP 118742

I haven't read the article in a while so it could be that I'm very wrong, but if I recall correctly the max was at 18-23 tons. Keep in mind that my memory is as good as the bite force of a hamster.

Rex Fan 684

Nice fight. 

As far as the bite force thing goes, minimally, T. rex had a bite force of about 6,800 psi. However, it wouldn't surprise me if they bit down with forces as high as 18,000-40,000 psi from time to time.

PS- This fight seems familiar. Where have I read this. Oh yeah, I wrote one, haha...

http://www.jurassicworld-movie.com/community/forums/topic/28589

UCMP 118742

Oh sorry, didn't know, well it's too late now. Btw, nice fight.

Rex Fan 684

Thanks. It really wasn't a big deal, haha. But glad you liked mine :)