What are the main types of scales in anatomy?
Placoid (sharks and rays) Cosmoid (lungfishes and some fossil fishes) Ganoid (bichirs , Bowfin, paddlefishes, gars, sturgeons) Cycloid and Ctenoid (most bony fishes) What are scales in animals? scale, in zoology, small plate or shield forming part of the outer skin layers of certain animals. Scales provide protection from the environment and from predators. ……