Although Tyrannosaurus Rex is arguably the most terrifying dinosaur to have ever roamed the planet, another T. rex previously terrorized the ancient oceans.
This ferocious animal, known as Tylosaurus Rex, is a gigantic new species of mosasaur, a family of marine reptiles that existed during the dinosaur era.
Tylosaurus rex, or simply T. rex, had a maximum length of 43 feet (13.1 meters).
As a result, Tylosaurus Rex is just as massive as the land-dwelling T. rex and more than twice as long as the largest great white sharks.
Tylosaurus rex, which translates to “King of the Tylosaurs,” was one of the largest mosasaurs in history, according to scientists.
Palaeontologists claim that these monsters had a mouth full of razor-sharp, highly serrated teeth and incredibly powerful neck and jaw muscles.
According to experts, about 80 million years ago, they would have been the top predators in the oceans above what is now Texas.
According to principal researcher Dr. Amelia Zietlow of the American Museum of Natural History, “everything is bigger in Texas and that includes the mosasaurs, apparently.”
Eighty million years ago, a marine lizard known as Tylosaurus rex, or simply T. rex, terrorized the ancient waters.
For many years, the fossilized remains of Tylosaurus rex have been kept in various museums around the United States, but no one was aware of their true nature.
While searching the American Museum of Natural History’s archives, Dr. Zietlow discovered a fossilized mosasaur that seemed to have been misdiagnosed.
The fossil was identified as a specimen of Tylosaurus proriger, another big mosasaur that was found more than 150 years ago.
But when Dr. Zietlow contrasted the fossil with the holotype, the name-bearing specimen, it became evident that this fossil was quite different.
With a skull nearly as huge as Dr. Zietlow’s, the enigmatic mosasaur is far larger than Tylosaurus proriger.
Similarly, fossils of Tylosaurus proriger from Texas are four million years younger than those from what is now Kansas, which date back approximately 84 million years.
Dr. Zietlow and her associates quickly realized that they had found a mosasaur species that had never been identified before, along with over a dozen similarly mislabeled fossils kept at different institutions.
A genuinely enormous specimen known as “The Black Knight” is their holotype specimen for the new species. It was initially found in 1979 near Dallas along an artificial reservoir.
These creatures may reach a maximum length of 43 feet (13.1 meters). As a result, Tylosaurus Rex is just as massive as the land-dwelling T. rex and more than twice as long as the largest great white sharks.
Researchers discovered that Tylosaurus rex had distinctive serrated teeth and was far larger than other mosasaur species.
Tylosaurus Rex is its scientific name.
Mosasaur family
Tylosaurine mosasaur subfamily
Eighty million years of age
Found in: Texas
Length: 7.62-13.1 meters (25-43 ft)
Diet: All-purpose predator
Extra-strong neck and jaw muscles, as well as serrated teeth for ripping huge prey, are examples of special adaptations.
Scientists claim that this would have been the “top predator of its domain” in an article published in the Bulletin of the American Museum of Natural History.
A warm shallow sea known as the Western Interior Seaway nearly split North America in half at this period, submerging most of Texas.
This would have been “home to a variety of sea monsters, including sea turtles, mosasaurs, plesiosaurs, and fish,” according to Dr. Zietlow.
However, unlike other mosasaurs, T. rex doesn’t seem to have been picky about what it ate because its teeth aren’t obviously specialized for a particular kind of food.
According to Dr. Zietlow, “Tylosaurus rex differs from other Tylosaurus in part by having serrated teeth and features of the skull that suggest stronger jaw and neck muscles.”
“I believe it was using those tools to tear things to pieces in order to process larger prey.”
However, the Tylosaurus rex posed a threat not just to other animals but also to members of its own species. According to Dr. Zietlow, “Mosasaurs in general seemed to have been pretty aggressive towards one another.”
T. rex would have been the “top predator of its domain” due to its incredibly powerful neck and jaw muscles. “I can think of at least one where another mosasaur’s tooth is still embedded in a Mosasaurus jaw.”
But it seemed that Tylosaurus Rex elevated these violent inclinations.
“Besides being huge… T. rex appeared to be a much meaner animal than other mosasaurs,” says Ron Tykoski, vice-president of science and curator of vertebrate palaeontology at the Perot Museum.We have evidence of aggression within this species to a degree not previously observed in other Tylosaurus individuals because to our investigation and analysis of well-preserved fossils gathered throughout the north Texas region.
The Black Knight, with its broken jaw and missing snout tip, is a stark example of the effects of these aggressive inclinations.
According to researchers, only another member of its own species could have caused these enormous wounds.
This discovery is helping us unravel the complex tale of mosasaur evolution in addition to providing an intriguing peek of a monster from the ancient past.
According to Dr. Zietlow, mosasaurs were once thought to be a “boring” group with relatively little diversity.
These animals were fiercely hostile to other members of their species, and fossils reveal severe wounds sustained during conflicts.
But as researchers examine the minute variations among ancient specimens, a surprisingly intricate picture is beginning to take shape.
“I think it shines a spotlight on how diverse mosasaurs are as a group,” Dr. Zietlow continues. “We have identified many new features of mosasaur anatomy, and when taken into account in our analyses of their evolutionary relationships, they paint a very different picture than what was known for the last thirty-ish years.”
About 66 million years ago, dinosaurs dominated the planet until abruptly going extinct during the Cretaceous-Tertiary extinction.
For a long time, it was thought that the massive reptiles’ food chain was decimated by climate change.
But in the 1980s, paleontologists identified a layer of iridium, a metal that is abundant in space but uncommon on Earth.
This was dated at the exact moment that the dinosaurs vanished from the fossil record.
Ten years later, researchers discovered the enormous Chicxulub Crater, which dates to that era, at the tip of Mexico’s Yucatán Peninsula.
According to current scientific agreement, these two elements are related and were most likely brought on by a massive asteroid colliding with Earth.
The collision would have produced a massive shock wave and probably induced seismic activity given the estimated size and impact velocity.
Dinosaurs would not have been able to survive since the fallout would have produced ash plumes that are believed to have covered the whole globe.
Some plant and animal species were able to thrive because their generational cycles were shorter.
There are a number of additional theories regarding the reason behind the dinosaurs’ extinction.
According to one early hypothesis, dinosaur eggs were consumed by small mammals, while another suggests that poisonous angiosperms, or flowering plants, wiped them out.
