Did the Tiny Arms of Certain Theropods like T. rex Evolve Five Separate Times?
The mighty dinosaur T. rex is famous for three things: its massive size, its massive teeth, and its very tiny arms.
Did the Tiny Arms of Certain Theropods like T. rex Evolve Five Separate Times?. The mighty dinosaur T. rex is famous for three things: its massive size, its massive teeth, and its very tiny arms. Of course, it’s claimed that evolution explains everything, so what is the evolutionary explanation for how the Tyrannosaurus rex , and other species like it, got those tiny arms? Well, apparently, the new evolutionary interpretation is that it’s because they have big heads. According to this new study, Smaller arms were closely linked to the development of large, powerful skulls and jaws, more so than to larger overall body size, indicating that tiny arms were not just a by-product of bodies getting bigger. These researchers claim that theropods started hunting bigger prey like sauropods (“long-neck” dinosaurs) and this “may have resulted in a s...