According tomedia reports, the Rex Tyrannosaurus is what we call the tyrannical dragon, it is not born is a super monster, can tear prey into pieces, now, paleontologist Thomas Carr found that Rex Tyrannosaurus went through 21 different stages of growth, from a thin little guy to a mature giant dinosaur king, its growth process went through two important stages – adolescence and about 18 years old.
1, the Rockies Museum in Bozeman, Montana, where a model of a young king dragon known as the “Cleveland Skull” and another adult king’s dragon skull known as the “B-Shape Dorson” Ray are on display.
Carr spent three years studying 44 fossils of Rex Tyrannosaurus rex bones, which are stored at the Natural History Museum across North America, and he points out that detailed studies of the supercarlets of the late Cretaceous period, 0.67-065 million years ago, are difficult but significant.
“I really like to study tyrannosaurs, I think they’re beautiful, and I want to understand every small change in their growth, and if possible, I want to see everything through their eyes,” said Carr, an associate professor of vertebrate palaeontology and biology at Kasich College in the United States. “It is understood that the dinosaur fossils involved in the study range from 2-year-old dinosaur fossil specimens at the Los Angeles Museum of Nature to 28-year-old dinosaur fossil specimens at the Field Museum in Chicago, the most comprehensive study analysis of the growth of Rex Tyrannosaurus, which showed that male and female dinosaur bones lookvery similar, and that the previously controversial dwarf tyrannosaur son is not an independent Tyrannosaurus, and the size and weight of the adult tyrannosaur son does not accurately predict its age.”
2, Thomas Carr, a paleontologist at the Bourke Museum of Natural History and Culture in Seattle, USA, is examining the skull of a tyrannosaur known as “The Love of Etavs.”
Each time Carr tested a different fossil specimen of the Tyrannosaurus rex, he evaluated up to 1,850 features, such as skull length, actual age (based on certain bone growth rings) and the presence of a bulge structure in the skull.
Lindsay Zanno, head of paleontology at the Museum of Natural Sciences in North Carolina, said: “We studied and analyzed 44 fossil specimens of tyrannosaurs, and we conducted the largest and most time-consuming study to understand the growth of tyrannosaurs. “
For example, the study data show that the tyrannosaurs have experienced two important stages in their growth – puberty and about 18 years old. The first change in the growth phase of the tyrannosaurs occurred in adolescence, starting at the age of 13, Carr said: “At that time, tyrannosaurs were young, had long skulls, narrow teeth, their bodies were about 6.4 meters long, and the adolescents were quite different from the adult tyrannosaurs, in fact, archaeologists had mistakenly regarded the juvenile tyrannosaurs as a species called dwarf tyrannosaurs.” “
Carr points out that over a two-year period between the ages of 13 and 15, the skull and jaw bone of the king man grew longer and the teeth thickened, essentially similar to the adult tyrannosaur. The second milestone growth change for the Tyrannosaurus was after the age of 15, when they reached 3 tons on their 18th birthday, which is important because other Tyrannosaurus rex is not as heavy as other species, and has become a super predator compared to other species.
Mr Zano said it was known that tyrannosaurs had overtaken other tyrannosaur sorority species in terms of growth, which had grown in size by rapidweight gain, and that tyrannosaurs had to go from being cubs to bone-crushing giants in about 20 years.
3. The tyrannosaur has gone through 21 different stages of growth, growing from a thin little guy to a mature king of giant dinosaurs, and has experienced two important stages in its growth process – puberty and about 18 years old.
However, the robust and strong adult tyrannosaurs are not necessarily older than the thin adult tyrannosaurs, Carr points out, and we found a dinosaur fossil sample named “Scotty” in the fossil sample snags that may not seem old, but it is actually the largest and most robust of all dinosaur samples. According to the study, Scotty is between the ages of 23 and 27, which means it is young.
At the same time, Carr’s research data show that male and female tyrannosaur bones look almost identical, as do other dinosaur species, and the only known way to determine the sex of dinosaurs is to see if it has a dinosaur egg, or to find myelin bone, a special bone tissue that is found only in the longer skeletons of female tyrannosaurs.
Is the dwarf tyrannosaur real?
On the controversy, Carr studied the “Cleveland Skull” – the first skull known as the Dwarf Tyrannosaurus — and the teenage “Jane’s Skull” – another dwarf tyrannosaur candidate, which some scientists believe is a kind of dwarf tyrannosaur, but others say it’s only a young tyrannosaur.
Carr points out that based on data collected from each fossil specimen, these so-called mini-scale dinosaurs are fully in line with the growth cycle of the tyrannosaurs. If they were a separate species, they would be a branch based on the tyrannosaurs, but they are not, but have evolutionary continuity. In addition, “Jane’s Skull” is in the process of a growth transition between the younger Cleveland Skull and the older Tyrannosaurus rex.
The results showed that the “Jane’s Skull” has shown that the bone color has become darker, the phenomenon is not seen in the “Cleveland Skull”, so it is like the “Cleveland Skull” and the sub-adult king dragon missing link.
Another study, published in the journal Science Advances, found that “Jane’s Skull” showed the characteristics of the young dinosaurs of the active growth stage, which did not enter the rapid growth phase, meaning that it was a growing tyrannosaur, rather than the dwarf tyrannosaur that scientists had previously speculated about.
However, More in-depth research and analysis is needed to see if the dwarf tyrannosaurs are real, says Macaulay Curator, curator of paleontology at the American Museum of Natural History.