Family
Trinucleidae Hawle et Corda, 1847
List of species
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Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Trilobita |
| Order | Asaphida |
| Superfamily | Trinucleoidea |
| Family | Alsataspididae |
| Dionididae | |
| Raphiophoridae | |
| Trinucleidae | |
| Genus | Deanaspis |
| Onnia | |
| Tretaspis |
See also