Trigonoceratidae
| Trigonoceratidae | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Mollusca | 
| Class: | Cephalopoda | 
| Subclass: | Nautiloidea | 
| Order: | Nautilida | 
| Superfamily: | †Trigonoceratoidea | 
| Family: | †Trigonoceratidae Hyatt, 1884 | 
| Genera | |
| See text | |
The Trigonoceratidae is a family of coiled nautiloid cephalopods that lived during the period from the Early Carboniferous (Mississippian) to the Early Permian.