For questions about exoskeletons, or the central structure of vertebrates, usually made of bone. Consider also the tag [bones].
This tag should be used for questions about the skeleton of a creature. This can either be about internal skeletons, also called endoskeleton, such as the ones used by vertebrates, or about external skeletons, also called exoskeletons, such as the ones used by insects.
When using this tag for an endoskeleton you should also consider using the specific tag bones when asking about specialties of the bones of your creature.