Allosaurus was only 28 feet long and weighed somewhere between 2,200 and 8,800 lb, depending on the weight estimate you use, while Tyrannosaurus was 40 feet long and weighed between 12,000 and 26,000 lb. Besides the massive size difference, Allosaurus had a smaller head in proportion to its body but much larger arms with three clawed fingers, and its arms could be used for hunting. Tyrannosaurus had tiny, functionless arms, but it had the most powerful bite force known. Allosaurus had a bite force weaker than that of a lion. Allosaurus also had a small semicircular crest above each eye, which Tyrannosaurus didn't have.
By external (superficial) appearances only. There are quite a few, albeit subtle, differences in the skull, back (vertebrae) and ankles that more plainly show Tyrannosaurus is more closely related to modern birds than to Allosaurus.
It is true they were both theropods - had three toes on each foot, a tail and ate meat - but that's really about where the true similarities end. While both appear to be very similar in build and shape, the fact is that the Allosaurus had three fingers on a slightly larger hand, compared to the T. Rex's two fingers on a much more diminutive hand. The Allosaurus was also an ''early bloomer'' on the dino-scene, appearing at approximately 80 million years before the T. Rex, who showed up in the late Cretaceous period.
Relatively, the Allosaurus was quite primitive. He was also much smaller than the T. Rex, sporting a smaller 28' body vs. the T. Rex's 40' body length (approximately). Keep in mind, on the subject of length, almost since day one, the bones, specifically the vertebrae, have been placed together, end-to-end, on the the dinosaur exhibits in museums and the like. It's actually far more likely that dinosaurs had quite a bit of supporting tissue between the bones, which would make their length(s) far, far more impressive than has previously been thought as this would add several feet to even the more modestly sized animals. Consider, for example, if a 40' T. Rex has some 72 vertebrae in his back and spine, and the supporting tissue between the vertebrae was only 1'' think, which is very thin, considering their massive size and weight, that's another 6' to add to the T. Rex's already impressive length. Also, keep in mind, T. Rex may have dwarfed Allosaurus, but Giganotosaurus was about 6 or so feet longer than T. Rex. And Spinosaurus was quite a bit longer than them all, weighing in at about 49'.
No, Allosaurus is a Carnosaur. Tyrannosaurus is a Coelurosaur. They are related, but neither is the ancestor or descendant of the other.
True. Tyrannosaurus rex, Coelophysis, and Allosaurus are examples of theropods.
Spinosaurus, although both the Allosaurus and commonly known Tyrannosaurus Rex are close behind.
No. Allosaurus and Tyrannosaurus Rex were of the same family, but not species. They are very similar and are often confused as each other.
Only one was an actual Tyrannosaurus Rex. The other carnivorous dinosaur was an Allosaurus.
Some allosaurs could've been bigger than T-rex but most would've been a bit smaller. The allosaurus size range was 20 to 36 feet depending on the species. Tyrannosaurus was aboout 39 to 40 feet long.
no allosaurus was an earlier smaller dinosaur that was almost as dangerous. t Rex also could have just scavenged for food.
the stegosaurus, the stegosaurus has plates on its back and soikes on its tail so that it can scare away predadors that eat other dinosaur, like the tyrannosaurus rex or the allosaurus wich was related to the t-rex.
Compsognathus is the smallest meat eater, so it had many predators like Tyrannosaurus Rex or Allosaurus.
Many dinosaurs ate meat. Some are Allosaurus and Tyrannosaurus rex. No dinosaurs lived in water
The meaning of Rex in Tyrannosaurus rex is king. If all, tyrannosaurus rex, meaning is tyrant king.
tyrannosaurus rex