Family
Acleistoceratidae Flower, 1950
List of species
1. Amphicyrtoceras benedictae Strand, 1934 | Ordovician
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Cephalopoda |
| Subclass | Multiceratoidea |
| Order | Oncocerida |
| Suborder | Polyelasmoceratidae |
| Family | Acleistoceratidae |
| Genus | Amphicyrtoceras |
| Family | Diestoceratidae |
| Graciloceratidae | |
| Hemiphragmoceratidae | |
| Jovellaniidae | |
| Karoceratidae | |
| Oncoceratidae | |
| Phtanoncoceratidae | |
| Trimeroceratidae | |
| Valcouroceratidae |
See also