Diplacanthiformes (also known as Diplacanthida, Diplacanthoidei, or Diplacanthini) is an order of "acanthodian" stem-chondrichthyans which lived during the Devonian Period.[1]
| Diplacanthiformes Temporal range: | |
|---|---|
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| Diplacanthus acus | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | †Acanthodii |
| Order: | †Diplacanthiformes Berg, 1940 |
| Subgroups | |
see text | |
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?