Species
Triarthrus jemtlandicus Linnarsson, 1875
Synonymy list
1875 Triarthrus jemtlandicus n. sp. — Linnarsson , pp. 493, fig. Pl. 22, fig 2
1998 Triarthrus jemtlandicus Linnarsson 1875 — Mansson , pp. 53, fig. Figs 4c, 7c and 1Oa-h
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Trilobita |
| Order | Ptychopariida |
| Suborder | Olenina |
| Family | Olenidae |
| Superfamily | Triarthrinae |
| Genus | Triarthrus |
| Species | freji |
| jemtlandicus | |
| linnarssoni | |
| Triarthrus |