Order
Allathecidae Missarzhevsky, 1969
List of species
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Hyolitha |
| Order | Aimitidae |
| Allathecidae | |
| Genus | Allatheca |
| Order | Hyolithida |
| Orthothecida | |
| Family | Circothecidae |
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Hyolitha |
| Order | Aimitidae |
| Allathecidae | |
| Genus | Allatheca |
| Order | Hyolithida |
| Orthothecida | |
| Family | Circothecidae |