Un nuevo estudio científico propone una explicación para uno de los mayores enigmas de la paleontología: los diminutos brazos del Tyrannosaurus rex habrían evolucionado en paralelo al desarrollo de su enorme cráneo y su devastadora mordida.

Five different groups of predatory dinosaurs independently evolved disproportionately small arms, and it seems they did so because their heads became so large and powerful

We Finally Have the Answer for T. Rex’s Tiny Arms: They have their massive heads to blame