Ostracoderm Definition

ŏstrə-kŏ-dûrm
noun
Any of various extinct primitive jawless fishes of the Ordovician through the Devonian periods, having bodies encased in an armor of bony plates.
American Heritage

Origin of Ostracoderm

  • Greek ostrakon shell ost- in Indo-European roots –derm

    From American Heritage Dictionary of the English Language, 5th Edition

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Unscrambles

ostracoderm