Family
Slapylitidae Valent, Fatka et Marek, 2017
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Hyolitha |
| Order | Hyolithida |
| Family | Amitidae |
| Angusticornidae | |
| Carinolithidae | |
| Crispatellidae | |
| Hyolithidae | |
| Parentilitidae | |
| Slapylitidae | |
| Genus | Slapylites |
| Family | Sulcavitidae |
| Tulenicornidae |