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Meaning of PLACODERM

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WordNet Dictionary
 
 Definition: [n]  fishlike vertebrate with bony plates on head and upper body; dominant in seas and rivers during the Devonian; considered the earliest vertebrate with jaws
 
 See Also: aquatic vertebrate, class Placodermi, Placodermi

 

 

Webster's 1913 Dictionary
 
 Definition: 
\Plac"o*derm\, n. [Gr. ?, ?, tablet + ? skin.]
(Paleon.)
One of the Placodermi.
 
Glossary
 
 Definition: a member of the extinct class of early jawed vertebrates.
 

 

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