Family
Jovellaniidae Foord, 1888
List of species
1. Hadoceras septocurvatum Strand, 1934 | Ordovician
2. Mixosiphonoceras norvegicum Strand, 1934 | Ordovician
Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Mollusca | 
| Class | Cephalopoda | 
| Subclass | Multiceratoidea | 
| Order | Oncocerida | 
| Suborder | Polyelasmoceratidae | 
| Family | Acleistoceratidae | 
| Diestoceratidae | |
| Graciloceratidae | |
| Hemiphragmoceratidae | |
| Jovellaniidae | |
| Genus | Hadoceras | 
| Mixosiphonoceras | |
| Family | Karoceratidae | 
| Oncoceratidae | |
| Phtanoncoceratidae | |
| Trimeroceratidae | |
| Valcouroceratidae | 
 See also