Skin attachment - Teeth are anchored to the skin by collagen fibers that run into the dentine from the dermis (in sharks). Each tooth touches the bone with the outer surface of the root, may be joined ...

Researchers at the University of Tsukuba investigated the mechanism by which posterior spinal fixation, a technique that ...

This element gave rise to the centrum in amniotes. At anterior end, below the notochord, is the intercentrum. Ichthyostegids (labyrinthodont amphibians) had vertebrae nearly identical with ...

The doctor will join spinal bones, called vertebrae, together. This limits the motion between them and how far your nerves can stretch. But it probably won’t limit your activity. It’s rare ...

Formally called Otodus megalodon, it is primarily known only from its serrated teeth, vertebrae, and scales in the fossil record with no known complete skeletons. Although much smaller ...