One of the most fearsome predators of all time, tyrannosaurus rex fascinate paleontologists as much as the general public. We learn today that scientists have finally figured out why these dinosaurs have such small arms.
It’s not the size that matters
Tyrannosaurs are undoubtedly among the dinosaurs that the general public appreciates the most. These theropods, which reigned at the top of the food chain before their disappearance 66 million years ago, have become very popular thanks to pop culture in particular.with works like The lost World by Arthur Conan Doyle and the first two Jurassic Park by Steven Spielberg.
However, despite the passion it inspires, the T-Rex has often been teased for its tiny arms, in view of its gigantic size. If in doubt, we recommend reading our article on These 25 “Tricks” The T-Rex Can’t Do Because Of Their Small Arms… But how to explain this? Because, as everyone knows, our physical characteristics are the result of natural selection and therefore have evolutionary advantages. What can be the advantage of having such short arms? University of California paleontologist Kevin Padian seems to have found an explanation for this mystery..
Recent research by a team of scientists from the University of Arkansas found that T-Rex were not solitary hunters, but rather hunted in packs, like wolves or hyenas.. This research, made from analysis of fossils from Utah, reports a synchronous death of four to five T-Rex, appear to confirm observations made twenty years ago by a Canadian teambut that had not created a consensus among scientists, some doubted the cognitive abilities of the T-Rex to hunt in groups, this type of hunting requires the ability to form complex social bonds.
Building on this research, which has completely redefined the way scientists perceive the behavior of these fearsome predators, the Californian paleontologist has hypothesized about the smallness of the arms of the T-Rex. According to him, its size is in fact an evolutionary advantage, sinceprevented the tyrannosaurs from tearing each other apart during the hunt.
In fact, if four or five T-Rex gobbled up the same prey with their huge jaws, an accident could happen quickly. Thus wounded, the dinosaur could die from its injuries. (bleeding, infections, etc.). As our colleagues from the magazine remember us Geo, it is not uncommon for large reptiles to injure each other by eating the same victim: this is the case with Komodo dragons and crocodiles. In this way, over time, the arms of the tyrannosaurs would have shrunk, to avoid any accident.
Given this assumption, we will think twice before making fun of the size of the T-Rex’s arms again… If you liked this article, feel free to take a look at this absolutely terrifying new species of theropod !