Species
Endoceras annulatum Hall, 1847
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Cephalopoda |
| Subclass | Orthoceratia |
| Order | Endoceratida |
| Family | Endoceratidae |
| Genus | Endoceras |
| Species | accomodatum |
| annulatum | |
| duplex | |
| iucundum | |
| megastoma | |
| naekki | |
| seticornium |