System Glossary
 Glossary Search for placoid scale (Search Options)

Definition of Term

placoid scale
(english) A type of scale, typically thorn-shaped, found on the skin of Elasmobranchii and claspers of Holocephali. Consists of a spine and a basal plate which is usually rhomboidal. It contains a pulp cavity and is composed of an inner layer of dermal bone, a middle layer of dentine and is covered by enamel-like vitrodentine. Also and less preferably called denticle, dermal denticle or odontoid.

Other Search Engines

European Environment Agency Glossary of the European Environmental Agency
Wikipedia The Free Encyclopedia
Encyclopedia Britannica Highly authoritative source
EPA Terms Glossary of the U.S. Environmental Protection Agency
LingInfo Glossary of biological terms
Google Search The largest Internet Search Engine
Google Image Search for Images related to the term
Glossary Index: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Back to Search
Update Glossary Entry | Add Glossary Entry
Back to Top