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Interesting Facts on Tyrannosaurus Rex & Albertosaurus

Updated on December 8, 2018
T-rex simulation
T-rex simulation | Source

The King (Rex)

Tyrannosaurus rex was the 'King of the Tyrant Lizards'. Why? Because it was the biggest meat-eating theropod and the most fiercest that ever walked the earth in prehistoric times. It lived in the Cretaceous period 67 million years ago mainly in North America and East Asia. This dinosaur was discovered in 1902 in Montana, US and was named by paleontologist Henry Fairfield Osborn.

Tyrannosaurus rex was equivalent to four cars long. It was longer than a giraffe and weighed just about the same weight as a fully grown elephant. The head of a tall person would reach half way up to its thigh (femur). The noise which the T-rex made is unknown or unofficial, but scientists believe it may have roared like a lion or made a squealing noise to call its kids or to keep close with other group members. The noise The T-rex made in the Jurassic Park movie is not believed to be accurate, and modern scientists now say it probably made a noise like an alligator, a harsh throaty noise.

The T-rex had gigantic feet and had three claws at the front and one claw at the back. The front legs were a bit small and high up on its body. They ended in what looked like tiny hands with two thin-clawed fingers. Scientists are not fully certain for what these front legs were used for, but they may have been used as a grip to take hold of its enemy. The front legs were not even long enough to reach its mouth to enter food inside. Although some scientists have suggested that the T-rex used its front legs to lift itself up on to its rear legs after a rest or waking up from sleep.

The T-rex had a large heavy head and measured around 1.2 meters, and the head was held up by a short and strong neck. The T-rex also hade massive jaws which was massive enough to swallow a human being as a whole. The rows of sharp teeth it had were curved slightly to get a flexible grip on its prey. Just like a big shark for instance, if the T-rex had bitten into its prey, the victim had no chance or way of sliding out of its mouth and making an escape, despite having deadly infected teeth. The teeth may have also grown again if the T-rex was in a fight and they have broken off.

The king of the tyrant lizards walked upright on its strong back legs, and balanced its huge body and weight with its long thick tail. It could also run extremely fast with its huge strong legs, but the legs were probably too large and heavy to move rapidly for a short amount of time. However, the T-rex may have relied on attacking its prey in the dense trees and ferns. Some scientists think that the T-rex may have hunted in packs, by surrounding other dinosaurs like a herd of herbivores such as the Triceratops or the Edmontosaurus so they cannot escape from them. Scientists believe that the T-rex may have also eaten carrion which are dead dinosaurs, and maybe any dying or helpless dinosaurs that it encountered, it showed no mercy.

Many dinosaurs were very large in prehistoric times, but many of them had trouble defending themselves against the T-rex because they were powerful fighters. Some of these dinosaurs did not have the teeth or claws to battle with the T-rex, but some were protected by tough, armored-plated skins and thick bony plates around their necks. Some of them had long sharp horns on their heads which is another form of self-defense against the T-rex. Others were small and light and were unable to run quick enough to flee from the T-rex.

T rex fossil
T rex fossil | Source

The Canadian Albertosaurus


The Prince

The Albertosaurus (a class of the theropod) was a vicious creature and many small dinosaurs in the forests of North America had to keep an eye out for this terriying carnivore. Albertosaurus means 'reptile of Alberta' in Canada where the location of the discovery was. It measure 9 meters long and weighed around 5000 pounds. It belonged to the class Theropoda and lived 75 million years ago in the Cretaceous period. The dinosaur was first discovered in 1884 by geologist Joseph B. Tyrell in Alberta, Canada. It was believed he was examining and surveying the Red Deer River and accidently found some fossils of the Albertosaurus. The dinosaur name was given by the paleontologist (who named the T-rex) Henry Fairfield Osborn in 1905 to respect the first fossil discovery made in Alberta.

The Albertosaurus was a brutal carnivorous dinosaur and was somewhat related to the Tyrannosaurus rex. Albertosaurus was thought to have ran faster on its long potent legs, although it was smaller than the T-rex. It normally chased after plant-eating dinosaurs or it may have ambushed them while they grazed in the wild. When the Albertosaurus does attack another dinosaur, its victim had slim chance of escaping. Once the victim is bitten and clawed, it was swiftly vulnerable and killed instantly.

Albertosaurus had knife-like teeth in its large mouth which were rows of backward pointing teeth, and was used for piercing and chewing up meat. On each of its two feet there were three long, sharp claws and another smaller one. At the end of each of its short arms were two small claws. With these claws in possession, this carnivore could grab and clench on to its prey. Such dinosaurs which the Albertosaurus preyed on was the Lambeosaurus, Chasmosaurus and the Anatosaurus. The Albertosaurus was the mini version of the T-rex, with power and I would have named it the Prince of the Tyrant Lizards.

Albertosaurus foot
Albertosaurus foot | Source

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