A dentist is the health care professional who specializes in the diagnosis, prevention, and treatment of diseases and conditions of the oral cavity (including the teeth, gums and other soft and hard tissues of the mouth). Dentists, also known as 'dental surgeons', help us maintain a bright healthy smile.
The dogfish sharks are classified in the phylum Chordata Chordata, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development.
There are 5 related classes in the phylum Echinodermata (the Latin name means spiny-skinned). For a detailed list with all classifications click here: Sea star or starfish (Asteroidea) Brittle stars, basket stars, serpent stars (Ophiuroidea)