T-Rex: Tiny Arms - Horizon: T Rex Warrior or Wimp - BBC

T-Rex experts in this BBC clip from Horizon look at the problem of the dinosaur's tiny arms, dispelling some of the myths surrounding the species. Watch more high quality videos on the new BBC Worldwide YouTube channel here: http://www.youtube.com/bbcworldwide

Category:

Entertainment

Tags:

• BBC
• Dinosaur
• Expert
• T-Rex
• Science
• Video
• Amazing
• Documentary

[tyrantslayer24]

They say T-rex had the smallest arms of any predatory dinosaur. What about Carnotaurus, Majungasaurus, and Aucasaurus? They didn't have arms, just wrists with fingers. Those dinosaurs are recognized as predators, but not T-rex (to some people)? They need to research every possible side of the argument before putting it in a documentry.

[artfantasies]

The evolution simply developed the strongest set of teeth ever, so there was no use for arms by a carnivore of that size. And don't forget the big claws of the feet. A simple scenario: T-Rex bites in the neck and cut off the whole site with the claws of one feet. Imagine the big wounds he would cause.

[majungasaurusaaaa]

@tyrantslayer24

I also hate how people dismiss these abelisaurs as scavengers becuz at first sight their teeth and jaws don't look too impressive at first glance. But they were the apex predators of the southern hemisphere after the big charcharodontosaurids went extinct and had their own ways of slaying titanosaurid sauropods. I would love to find out how they did it. Abelisaurs are so under researched and underrated.

[Allosaurid77]

@9000ALfilms Ok, Thanks! I did not know that :)

[9000ALfilms]

Tyrannosaurus rex was not a scavenger although all carnivores today scavenge when their food supply is short.

although i do not believe it was a scavenger, here is supporting evidence that might change our view of T rex: Most scavengers today (Tasmanian Devils, Hyenas) have bone crushing bites.

yet again crocodiles have the strongest bite force today and they have thick teeth.

I finally say that T rex was not a scavenger, not a predator but an ambush predator.

[9000ALfilms]

@Allosaurid77 actually Steven didn't want a new dinosaur. Joe Johnston did.

[Allosaurid77]

I reckon that Jack Horner says T rex was a scavenger because he was an advisor at Jurassic park 3.Spielberg wanted a Dinosaur to replace T rex, Horner suggested Spinosaurus and must have realised that Spino was weaker than T rex. But he really wanted to be advisor and wanted to throw a spanner in the works. People would begin to know him as the man who declared T rex a scavenger. He said T rex was a scavenger because he wanted to be different, what better way than to become a Hollywood sell out!

[deathstar976]

The bone smashing teeth actually enhances the power of the bite and trex mainly went after the most fearsome advance armored dinos of all time, as in different species of ceratopsians and ankylosauridae. Let alone trex teeth are also far more effective then more primitive thin weak teeth and would hold on, tear off and penetrate deeper then any other. Also here is no possibility something of that size could manage on scraps and nearly impossible to find them before devoured by smaller dinos

[deathstar976]

The only reason why Jack is so ignorantly making false accusations on trex is for the obvious publicity and attention he didn't had prior to the claims. These claims are ignorant. Trex had the most strongest skull, jaws, neck and teeth of any other theropod which was also agile and capable of inflicting major damage which is why it didn't really need arms. The arms throughout the evolutionary line of large predatory theropod clearly shows the arms getting smaller through time.

[cf572]

and body structure's leg structure showed that it was fast moving as another evidence of running 30kph i dont like t.rex but scavenger theory is so 10 years ago, and everyone is still talking about it? there apears to be more evidence supporting t.rex was a hunter, and my logic supports it too, its just the Spinosaurus Aegypticus,Giganotosaurus,Carc­harodontosaurus Saharicus,Mapusaurus Roseae,Allosaurus Fragilis fanboys over Tyrannosaurus Rex but its not helping. no decent evidence

[cf572]

jack said that t.rex had a poor eye sight, scientist used ct scans and saw something in the brain, the brain shape supported eagle eye vision, and if you look at a t.rex skull t.rexs eyes point forward meant great depth perception, does not mean scavenger those features can be used for predators too like eagles,falcons, and through ct scans show that t.rex had a strong sense of smell stronger than modern dogs and most likely ran 30kph it had muscles extending from the thigh to the tail for speed

[cf572]

why were those three herbivores that lived with t.rex so equiped with weapons? well dromeasaurus lived with t.rex, but i doubt huge horns was used for a tiny target, and ankylosaurus would have a difficult time hitting a swift dromeasaurus with its tail and a pack of raptors, and edmontosaurus it used its tail for dromea too but why such a large tail? bite marks of t.rex found on fosils of edmonto,trike, on the bones these wounds showed signs of healing