Species
Hypagnostus parvifrons (Linnarsson, 1869a)
Synonymy list
1869     Agnostus parvifrons n. sp. — Linnarsson , pp. 82, fig. 2:56,57
2023     Hypagnostus parvifrons (Linnarsson, 1869) — Weidner et al. , pp. 56, fig. 30J–L, 31A–L, N–R
2023     Hypagnostus parvifrons (Linnarsson) — Westergård , pp. 45, fig. 4:27-31
Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Arthropoda | 
| Subphylum | Trilobita | 
| Order | Agnostida | 
| Family | Spinagnostidae | 
| Genus | Hypagnostus | 
| Species | brevifrons | 
| clipeus | |
| lingula | |
| mammillatus | |
| parvifrons | |
| truncatus |