Pterosaur

It reproduces the iconic features of pterosaurs — the elongated fourth finger bones, combined with the forearm bones and upper arm bones to form a complete wing bone framework, clearly demonstrating the structural logic of the wing membrane attached to the bones. It restores the hollow bone structure evolved by pterosaurs to reduce weight; at the same time, it conforms to the typical fossil characteristics of pterosaurs such as the skull, trunk vertebrae, and short tail. It adopts integrally for