Pack Hunting Tyrannosaurids?

NOAH ECKECKENRODE - That is incredibly interesting! I recently read an article very similar to the one you've presented - though both are exceptionally fascinating! Thank you so much for sharing this with us! :)

Seeing as we're on the jurassic park forums, I think this quote is appropriate:

"They're moving in herds, They do move in herds!"

Anyway, I'm all for a pack, neigh, Terror of tyrannosaurs having exhisted, although I feel that the larger species would've traveled in smaller, more family-based groups, whereas small-mid sized tyrannosaurs would've traveled in terrors of twenty or more. My reasoning behind this is that such a big creature would require more food, so a group of 5 fully-grown adult rexes seems improbable to me, as they would've had to get at least two good kills every single day to sustain themselves, and any younger members that may be with them.

Family groups most likely for large Tyrannosaurs for reasons stated by Silver. Very cool nonetheless.

 I see large tyrannosaurs in family groups and mid sized in small packs. 

It it would be tougher for tyrannpsaurs to survive in a pack, then most large possible pack hunters (Giga carchar, mapu ect) just because there was no sauropods with any of the Tyrannosaurids.

I personally believe that the smaller tyrannosaurids lived in larger packs, whilst the northern Tyrannosaurs (rex) lived in small family groups. but in the south, where there was a different type of prey, I personally believe that the "Tyrannosaurus X" (or as I like to call it "Tyrannosaurus australi" the southern Tyrant Lizard) lived in small packs of up to 5 members and hunted the Alamosaurs and the smaller Hadrosaurs.

Thanks for sharing this! I think the pack hunting was family groups.

Yeah Hipho, you forgot about Alamosaurus.

Anyways, I always felt tyrannosaurs were pack hunters. I see the juveniles and sub-adults scaring up, say a hadrosaur, and chasing it into the jaws of the slower, but stronger adults.

I've never heard about alamosaurus, I'll have to do some reserch.

Alamosaurus was a large titanosaur from North America. The first specimens indicated animals about 60 feet long and 20-25 tons. However, new bones indicate these dinosaurs were comparable to Argentinosaurus in size, somewhere around 80-100+ feet long and 70-100+ tons...

@RexFan if i'm correct, they don't even know if those remains are Alamosaurus or not. They very well could be...

Now, on to pack hunting Tyrannosaurids. We have evidence of this occuring - at least large amounts of Tyrannosaurs, namely Albertosaurus - found in large gatherings, all being killed off at once. The individuals ranged from 5 or so meters, to a very old gargantuan 11 meter animal. Such variation in size suggests at pack living in at least the mid sized Tyrannosaurs.

The Larger species, such as Tarbosaurus, Zhuchengtyrannus, and of course Tyrannosaurus would certainly not need that advantage. They are already large enough to take down large animals on their own. However, When the youngsters come out of their egg and are old enough, cooperative hunting in family groups was bound to happen.

Thanks for the info rex fan, Almosaurus is definitely a cool dinosaur, its strange to see that it lived in North America unlike the other titanosarurs which lived in Africa/South America.

That's what makes it special.

Rex Fan 684 - I agree with you on this one. It makes sence in nature expecially when we have an example in the way lions hunt.

Thanks John.

PS- Don't forget when Yutyrannus was first found, it was found in a group. An adult, sub-adult, and a juvenile. A pack or family perhaps.