(n.pl.) An extinct group of fishes, supposed to be ganoids. The body and head were covered with large bony plates. See Illust. under Pterichthys, and Coccosteus.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). placodermi. Retrieved September 26, 2026, from http://smartdefine.org/placodermi/definitions/2046014 |
| Chicago | Webster's. 2011. "placodermi" http://smartdefine.org/placodermi/definitions/2046014 (accessed September 26, 2026). |
| Harvard | Webster's 2011, placodermi, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/placodermi/definitions/2046014>. |
| MLA | Webster's. "placodermi" 27 May 2011. Web. 26 September 2026. <http://smartdefine.org/placodermi/definitions/2046014> |