arthrodire

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English[edit]

Noun[edit]

arthrodire (plural arthrodires)

  1. (zoology) Any member of the extinct order Arthrodira, armored jawed fishes that flourished in the Devonian period.
    • 2009 January 15, Martin D. Brazeau, “The braincase and jaws of a Devonian 'acanthodian' and modern gnathostome origins”, Nature Volume 457 No. 7227, doi:10.1038/nature07436:
      The basicranial circulation of Ptomacanthus resembles that in arthrodire placoderms.

Hypernyms[edit]