These anatomical structures are evolutionarily related to the limbs of the first terrestrial vertebrates

con un reemplazo continuo para compensar el desgaste constante causado por su dieta herbívora

where it coexisted with other primitive mammals

con una longitud de aproximadamente 9 metros y un peso que podía alcanzar las 3 toneladas

Altura 110 mm

Pachycephalosaurus skull juvenile Galliminus These anatomical structures are evolutionarilyThe skull of Pachycephalosaurus , or "fat headed lizard," is a marvel of paleontology that offers fascinating details about the anatomy and behavior of these herbivorous dinosaurs from the Late Cretaceous period. This distinctive skull features a number of unique characteristics that make it unmistakable. With its thick, rounded bony dome on top of its skull, Pachycephalosaurus likely used its head as a weapon during intraspecific fights or to defend