Like the rings on the trunk of a tree, our bones maintain a record of their development in the growth layers. After observing that T. Rex and his close relatives grew remarkably in size during adolescence, Dr. Tom Cullen of the Field Museum went out to see if this was the most common feature among dinosaurs with the same lifestyle.
If you’ve ever wondered what it was like for a teenager to grow up to be like Tyrannosaurus – always hungry and tormented – you probably knew you could be more accurate than that. The carnivorous king had different growth patterns from other carnivorous dinosaurs, characterized by an exceptional growth period, during which time they were probably more hungry and irritable than before. Meanwhile, even the equivalent-sized throbs were more like the imaginary tortoises of the Aesop’s than the rabbits, reaching their huge size through slow and steady growth.
“We wanted to look at a wide range of different-throated, two-legged, carnivorous dinosaurs to understand the broader patterns of growth and evolution in the group,” Cullen said in a statement. “We especially wanted to understand how many of them got so big – how did T. Rex come up with the only way to do it?”
The answer is no, Cullen and co-authors claim in The Proceedings of the Royal Society B that Cullen is one of the greatest and most famous Ts of all time. rexes including the SU, including the bones of many sizes.
Most of these dinosaurs have bone rings that indicate lifelong lazy growth, with the exception of tyrannosaurs. Cullen sees that the SU is growing at the age of 20, but his age has risen to about 33.
The question the team wanted to answer was more complicated than just measuring the rates of different dinosaur species. As some people’s body parts grow larger than others, such as moving to an awkward stage before resting, dinosaurs can do the same thing.
Dr. Cullen took a core from SUV’s left thigh bone. However, the authors found that weightless dinosaur bones were regenerated over a lifetime, and preserving the growth rings does a bad job of presumably t. Rex’s arms grew earlier than the rest of their body and it was long enough to be useful for teenagers.
“We can’t say for sure, but there may be some sort of selection pressure for the coelurosaurs to continue to grow rapidly with their prey or for the allosauroids to grow in size as their prey size is also increasing,” Cullen said. However, he acknowledged that this is not the case in the United States.
