Placoid Scales of a Shark
These placoid scales are found in cartilaginous fishes. They are also called dermal denticles. These scales do not grow in size, more are simply added as the fish grows larger.
Keywordsscales, scale, shark, dentine, rays, dermal, sharks, cartilaginous, denticles, chimaeras, placoid, small tooth
William Dwight Whitney, PhD, LLD The Century Dictionary: An Encyclopedic Lexicon of the English Language (New York, NY: The Century Co., 1895) 5368