Family
Tarphyceratidae Hyatt, 1894
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Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Cephalopoda |
| Subclass | Tarphyceratia |
| Order | Tarphyceratida |
| Family | Discoceratidae |
| Estonioceratidae | |
| Tarphyceratidae | |
| Genus | Tarphyroceras |
| Family | Trocholitidae |