placoderm

English

Etymology

From placo- +‎ -derm, after German Placoderm.

Noun

placoderm (plural placoderms)

  1. (paleontology) A member of an extinct class (Placodermi) of jawed fish with armored heads; the group lived during the Silurian and Devonian periods. [from 19th c.]

Adjective

placoderm (comparative more placoderm, superlative most placoderm)

  1. (paleontology) Pertaining to the class Placodermi. [from 19th c.]
    • 2018, Elsa Panciroli, The Guardian, 24 January:
      Research published recently on placoderm fish fossils from Scottish Devonian lakes (around 365 myo) found evidence for how this extinct group of animals copulated.

See also

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