The infamous Tyrannosaurus rex – or T. rex – could have weighed up to 33,000 pounds (15,000 kg) when it roamed the Earth.
That’s just over the weight of two elephants, or a double-decker London bus, and is 70 percent heavier than previously thought.
Researchers from the Canadian Museum of Nature in Ottawa built a model that predicted the maximum size of a prehistoric beast.
To date, 32 adult specimens of Tyrannosaurus rex have been discovered out of an estimated population of 2.5 billion.
The largest is “Scotty,” which weighed more than 19,400 pounds (8,800 kg) and was over 42 feet (13 meters) long when it roamed what is now the western side of North America between 68 and 66 million years ago.
However, the researchers say that the discovered specimens may not be an accurate representation of the species, and that the undiscovered individuals may have been much larger.
Tyrannosaurus Rex (pictured) was a type of bird-like, meat-eating dinosaur. It lived between 68-66 million years ago in what is now the western side of North America
What was a T-Rex?
Tyrannosaurus rex was a type of bird-like, meat-eating dinosaur.
It lived between 68-66 million years ago in what is now the western side of North America.
They can grow up to 40 feet (12 m) tall and 12 feet (4 m) wide.
More than 50 fossilized specimens of T. Rex have been collected to date.
The feral animal had one of the strongest bites in the animal kingdom.
Artist’s impression of a T. Rex
Paleontologists Jordan Mallon and Dr. Dave Hoon first collected data on the population size and life span of T. rex.
They used this data to build two models that predict the typical growth curve of a dinosaur over its lifetime.
One of these models assumed that the species exhibited sexual dimorphism in body size—with females and males growing to different weights—and the other did not.
‘If T. rex was dimorphic, we estimate it could have weighed up to 53,000 lb (24,000 kg),’ Dr. Malone told Live Science, ‘but we have rejected this model because if it was correct, we would have found larger individuals so far.’ “.
Earlier this year, a different study claimed that T. rex may actually have had three species — including T. regina, or “queen of the dinosaurs,” and T.
But this was later refuted by other scientists who said there was not enough evidence to divide the famous species.
The researchers presented their model and prediction on adult T. Rex body weights at the Society of Vertebrate Paleontology’s annual meeting earlier this month.
While Mr. Mallon Confirmed on Twitter He is “modifying” the final manuscript for this research, and he also cautioned that the results are speculative until a sample of this size is discovered.
he is chirp: “Our back-of-envelope calculations indicate that an animal of 15,000 kg is mechanically feasible, but this would require more rigorous testing.”
“We’re talking about the equivalent of a human being 6’9,” added Dr. Hon, V.I Twitter.
The largest dinosaur specimen ever discovered is “Scotty” (pictured), which weighed more than 19,400 pounds (8,800 kg) and was over 42 feet (13 meters) long when alive
Research last year revealed that humans could outrun a T. Rex, enjoying a “fun” stroll at 2.8 mph (4.6 kph).
Scientists estimated the stride length of a T. Rex specimen named “Trix,” and reconstructed its tail to see the rhythm at which it would swing.
Thus, the average walking speed of the animal is comparable to that of emus, elephants, horses, and humans.
Other studies have looked at why a tyrannosaurus had such small arms relative to its body.
For example, a 45-foot-tall T-rex might have had a five-foot-tall skull, but arms only three feet long–the equivalent of a six-foot, five-inch withers.
One study suggests that they developed it to reduce the risk of being bitten by others Hungry T. rex adults while devouring a carcass.
Another claims that dinosaurs with smaller forelimbs used them to grip each other during mating, or to help them stand up after a fall.
The study found that T. rex has complex nerve sensors at the tips of its jaws to help it identify what it is eating.
Tyrannosaurus rex had nerves in its jaw that would have allowed it to recognize and eat different parts of its prey differently.
This is the conclusion reached by experts from Fukui Prefecture University, who surveyed the fossilized lower jaw of T. rex and reconstructed the neurotype inside it.
The fearsome reptiles may also be dexterous enough with their mouths to use them to make nests, care for their young and even communicate with each other.
The team said that while the internal structure of the jaw has been previously studied in many fossil reptiles, this is the first study of its kind to focus on T. rex.
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Tyrannosaurus rex had nerves in its jaw (pictured in orange) that allowed it to recognize and eat different parts of its prey differently
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