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The speed of the Trex will depend on whether it's a Predator or a Scavenger.
Because something that big is not going to be an ambush hide and seek type.
So you would think as a Predator it would need to have some runner ability. If it's a scavenger then the average carcass goes 0mph so it be fine.
Good eating on a dead brontosaurus.
My only concern with the very large herbivores is they must be deforestation machines. They would strip a forest in no time.
When I'm depressed, I like to imagine a T Rex trying to put on a hat.
I never would have thought of that.
They evolved short forearms so that they wouldn't maim themselves while brushing their teeth.
How did T Rex open the package?
They evolved short forearms so that they wouldn't maim themselves while brushing their teeth.
View attachment 625135
One possible is that the bite and jaws were the money and the arms grew redundant.
T. rex arms are very small relative to overall body size, measuring only 1 metre (3.3 ft) long. However, they are not vestigial but instead show large areas for muscle attachment, indicating considerable strength. This was recognized as early as 1906 by Osborn, who speculated that the forelimbs may have been used to grasp a mate during copulation.[35] It has also been suggested that the forelimbs were used to assist the animal in rising from a prone position.[29] Another possibility is that the forelimbs held struggling prey while it was dispatched by the tyrannosaur's enormous jaws. This hypothesis may be supported by biomechanical analysis. T. rex forelimb bones exhibit extremely thick cortical bone, indicating that they were developed to withstand heavy loads. The biceps brachii muscle of a full-grown Tyrannosaurus rex was capable of lifting 199 kilograms (439 lb) by itself; this number would only increase with other muscles (like the brachialis) acting in concert with the biceps. A T. rex forearm also had a reduced range of motion, with the shoulder and elbow joints allowing only 40 and 45 degrees of motion, respectively. In contrast, the same two joints in Deinonychus allow up to 88 and 130 degrees of motion, respectively, while a human arm can rotate 360 degrees at the shoulder and move through 165 degrees at the elbow. The heavy build of the arm bones, extreme strength of the muscles, and limited range of motion may indicate a system designed to hold fast despite the stresses of a struggling prey animal.[36]
The Allosaurus is a Jurrasic Trex style dinosaur but has longer arms.
So why would the Trex have short arms that have no purpose.
One possible is that the bite and jaws were the money and the arms grew redundant.
Would a bipedal creature be a better runner than a quadruped?
Next pearl of wisdom is the a pterodactyl wasn't a dinosaur. True story, bro.