英和和英

語源

From placo- +‎ -derm, after German Placoderm.

名詞

placoderm (plural placoderms)

1. (paleontology) A member of an extinct paraphyletic class (†Placodermi) of jawed fish with armored heads and thoraces; the group lived during the Silurian and Devonian periods. [from 19th c.]
   • 2012, Caspar Henderson, The Book of Barely Imagined Beings, Granta Books, published 2013, page 12:

     Out to sea are placoderms – heavily armoured fish, some of them more than six metres (twenty feet) long and equipped with massive, powerful jaws.

形容詞

placoderm (not comparable)

1. (paleontology) Pertaining to the paraphyletic class †Placodermi. [from 19th c.]
   • 2018 January 24, Elsa Panciroli, The Guardian:

     Research published recently on placoderm fish fossils from Scottish Devonian lakes (around 365 myo) found evidence for how this extinct group of animals copulated.

参考

• Placodermi

アナグラム

• proclamed