| Brachythoraci Temporal range:
| |
|---|---|
| |
| Dunkleosteus and Titanichthys skulls in Wyoming Dinosaur Center | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | †Placodermi |
| Order: | †Arthrodira |
| Clade: | †Phlyctaenioidei |
| Suborder: | †Brachythoraci Gross, 1932 |
| Contained taxa | |
Brachythoraci is an extinct suborder of arthrodire placoderms, armored fish most diverse during the Devonian.