T. Rex might have Run Faster

As far as killing machines go, T. rex was arguably the paleo-title holder. Now thanks to a closer look at the beast’s rear end, scientists may have upped the ante. Apparently, the dinosaur sported some of the beefiest tail muscles, which powered a swift run.
Result:T. rex could have run downany other dinosaur in its environment, the research suggests. Until now, scientists thought Tyrannosaurus rex’s tail served only to counterbalance the weight of the dinosaur’s enormous head. Contrary to earlier theories, T. rex had more than just junk in its trunk.

To get a peg on how powerful T.rex’s tail was, scientists compared it with the tails of modern-day reptiles, such as crocodiles, Komodo dragons, brown basilisk lizards, veiled chameleons and green iguanas. To do so, he dissected several of the modern reptiles to look for evidence in the bones for insertion points of muscles — basically, bone correlates he could use to reconstruct a reptile’s musculature (for specimens for which only bones were available, such as T. rex). He found the single largest tail muscle in these reptiles was the M. caudofemoralis, which attaches to the femur.

While most of the muscles in thetail are responsible for swishing, curling and stabilizing the tail — they’re involved in tail movement— the primary function of M. caudofemoralis is in locomotion. As that muscle contracts, it brings the femur back, putting it in a position to push off of and move forward.

Based on this information and information gleaned from studying skeletal specimens at museums, Persons digitally reconstructed the tails of modern reptiles, as well as T. rex and two other theropods (a group of bipedal, carnivorous dinosaurs) –Gorgosaurus libratus and Ornithomimus edmontonicus. T. rex would have a bulky tail, comparable to that of crocodiles. As it turns out, [its tail] was beefier than crocodiles. Its M. caudofemoralis would have also dwarfed those of Gorgosaurus and Ornithomimus. Overall, the muscle mass in T. rex’s tail has likely been underestimated by as much as 45 percent up until now.

Gotta run

As for how T. rex’s tail muscles got so giant, it was suggested that the development had to do with the tail’s structure. The tails of bothT. rex and modern reptiles are equipped with rib bones that are attached to vertebrae. Those ribs are located much higher on T. rex’s tail, leaving much more room along the lower end of the tail for the caudofemoralis muscles to bulk up and expand. Without rib bones to limit the size of the tail-locomotive muscles, they turned into robust powerhouses enabling T.rex to run..fast.

It looks like T. rex was suited to outrun all the other dinosaurs in its environment including duckbills, sauropods, horned dinosaurs and ankylosaurs. The new, bulkier tail painted by this study also suggests T. rexwas more stable overall, because the bigger tail muscles would’ve shifted the dinosaur’s center of mass back slightly. That means the dinosaur didn’t have to use as much energy to support its heft, and instead could focus that energy on running.
The results not only reveal how T. rex hunted and may have interacted with other dinosaurs (since now it could easily snag them), it also suggests a rewrite of dinosaur illustrations. Over time, as paleontologists learned more about dinosaurs, their drawings also got updates, morphing the animals into athletic, agile beasts that were much slimmer than in the past. However, as their bodies slimmed down, so did their rear ends.
[credit: LiveScience]

Estimating t-rex speed

Estimation of t-rex’s speed is one of the most doubtful topic. How we calculate a biggest predator’s speed while it has gone extinct? I’ve calculated t-rex’s speed after seeing It’s skelaton and it is about 44.289 miles per hour. However I can’t show you figures which I’ve used in calculating speed because my mobile doesn’t support it. T-rex skelaton support its leg to move through an angle of 45degree. Now length of its leg is about 7m. The maximum possible angle between two legs is 90 degree while running and it makes a right angle triangle. The distance travelled in one step will be equals to 7(sqrt)2 which is about 9.899m. Now if it not so smart as modern reptile due to its bulk and size. Hence it can travel only two step in a second then It’s able to measuring distance of 19.798m. And it is speed in m/s. Which is about 71.27636354km/h or 44.289 miles/hour. If we consider one more thing and that is that its muscles were strong enough and capable of making up to 3or 4 step in a second , it can achieve an incredible speed. It is not necessary that a large spectos couldn’t be smart when compared to small predator. One thing is clear from above estimation that it can run easily at a speed up to 50miles/hour.

Prehistoric Vs Prehistoric world : spinosaurus vs t rex

Spinosaurus VS T-rex

Brief Intro:

In Jurassic park 3, you have seen two biggest carnivorous predator facing off each other in battle field. One is spinosaurus and another one is t rex. But there was a blunder mistake in that face off. Spinosaurus was biggest predator in context of size , ever lived on land. It was about 55 feet long and 24 to 28 feet in height including spines. Its head was 6feet long croc like head filled with teeth specially designed for hunting small raptors and fish. It can run up to 25 miles per hour. T-rex was a apex predator with a length up to 48feet and height up to 24feet at hips. Its head was 5 to 5.5feet long filled with 8inch long teeth and powerful jaws having bite force of 6000 kg. He can run up to 40to 50 miles per hour roughly.

Face off

In Jurassic park Spinosaurus was winner and T rex was loser. But in real battle field there was no chance to escape from T rex’s jaws and its powerful jaw were capable of to crush the neck of Spinosaurus and it would be loser. This was a mistake in Jurassic park.

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