acanthodian

Noun

 * 1)  A member of a group of extinct fish  that existed from the Silurian to the Permian period.
 * 2) * 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 emerging picture of acanthodian (and perhaps placoderm) paraphyly does not overturn a general consensus about gnathostome interrelationships.

Translations

 * Portuguese: acantódio

Adjective

 * 1) Pertaining to.