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