Diplacanthiformes

Diplacanthiformes (also known as Diplacanthida, Diplacanthoidei, or Diplacanthini) is an order of "acanthodian" stem-chondrichthyans which lived during the Devonian Period.

Subtaxa

 * incertae sedis
 * Genus Bryantonchus
 * Genus Culmacanthus
 * Genus Devononchus
 * Genus Striacanthus
 * Genus Tetanopsyrus
 * Family Diplacanthidae
 * Genus Diplacanthus
 * Genus Milesacanthus
 * Genus Ptychodictyon
 * Genus Rhadinacanthus
 * Family Gladiobranchidae?
 * Genus Gladiobranchus
 * Genus Uraniacanthus?