placoderm
IPA: pɫˈeɪkʌdɝm
noun
- (paleontology) A member of an extinct class (Placodermi) of jawed fish with armored heads and thoraces; the group lived during the Silurian and Devonian periods.
adjective
- (paleontology) Pertaining to the class Placodermi.
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Examples of "placoderm" in Sentences
- Tieraspis is an extinct genus of placoderm.
- Plourdosteus is an extinct genus of placoderm.
- Radotina is an extinct genus of placoderm from the Devonian.
- It was also relatively small for placoderm, at just in length.
- The Petalichthyida was an order of small, flattened placoderm fish.
- Both placoderm armoured fish and agnatha jawless fish have been discovered.