In this connection, there were differences in the structure of the skeleton of amphibians and reptiles?

Due to the complete exit from the aquatic habitat to the terrestrial-air habitat, reptiles have a different body structure, in contrast to amphibians. The skull is connected to the spine movably with the help of one condyle (like in birds), that is, they can freely turn their head. Since reptiles increase mobility in their habitat, the skeleton and muscles change: the position of the limb sections changes both in relation to each other and to the body, the limb girdles become stronger, the spine is divided into sections.