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dermal denticle

dermal denticle in Science
dermal denticle  
A toothlike or platelike scale of cartilaginous fishes, such as sharks and rays. The teeth of these fish are also dermal denticles of larger size and modified by the presence of serrated edges.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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