placodermian

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adjective

Of, or relating to, prehistoric armoured fishes in the paraphyletic class Placodermi.

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Meanings

adjectiveplacodermian (not comparable)
  1. not comparablebiologyOf, or relating to, prehistoric armoured fishes in the paraphyletic class Placodermi.

    Furtheron the ancient agnathian and the placodermian fishes disappeared.

    1984, Nikita Alekseevich Bogdanov, Palaeontology: proceedings of the 27th International Geological Congress, Moscow 4-14 August 1984
    2 more examples

    Many organisms were affected including conodonts, ammonoids, echinoderms, trilobites, ancient agnatian and placodermian fishes, continental plant communities, ostracodes, […]

    2008, Tom McCann, The Geology of Central Europe: Precambrian and palaeozoic

    It mainly affected pelagic and hemipelagic organisms (e.g. conodonts, ammonoids, echinoderms, trilobites, ancient agnathan and placodermian fishes), […]

    2014, A. Gąsiewicz, M. Słowakiewicz, Palaeozoic Climate Cycles: Their Evolutionary and Sedimentological Impact

Origin

Placodermi + -an

Full word history & related roots →

Rhymes & wordplay

Anagrams

pinacodermal
Cite this entry
APA

placodermian. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/placodermian

MLA

“placodermian.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/placodermian. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “placodermian,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/placodermian.

Source: placodermian on Wiktionary, CC BY-SA 4.0.