Species
Arthrorhachis tardus Barrande, 1846
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Trilobita |
| Order | Agnostida |
| Suborder | Agnostina |
| Family | Metagnostidae |
| Genus | Arthrorhachis |
| Species | mobergi |
| tardus |
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Trilobita |
| Order | Agnostida |
| Suborder | Agnostina |
| Family | Metagnostidae |
| Genus | Arthrorhachis |
| Species | mobergi |
| tardus |