Pachycephalosaurus

The most core skeletal feature of the replicated Pachycephalosaurus — the ultra-thick, rounded cranial roof bone — reproduces the skeletal mechanical structure of the Pachycephalosaurus: the hindlimb bones are robust, the forelimb bones are short and slender, the trunk vertebrae are short and sturdy, and the tail bones are slightly thick. It adopts 3D-printed integrated built-in joints: the cervical vertebrae can twist flexibly, the hindlimb joints can bend, and the trunk vertebrae can slightly