Any of the individual irregular bones that make up the spinal column

Any animal of the subphylum Vertebrata, characterized by having a backbone and a highly developed nervous system; includes fish, amphibians, reptiles, birds, and mammals.

Any animal that does not have a backbone or spinal column; this group makes up the vast majority of all animal species.

Vertebrata; the phylum of vertebrate animals

chiropractic therapy

scoliosis; an abnormal sideways curvature of the spine

a jawless fish such as a lamprey or hagfish, belonging to the class Cyclostomata

lacking a backbone or spinal column

The study of fossil animals with backbones