Species
Acidusus aculeatus (Angelin, 1851)
Synonyymit
1851 Agnostus aculeatus n. sp. — Angelin , pp. 28, fig. 15A–O
2009 Ptychagnostus aculeatus (Angelin) — Peng et al. , fig. 13, 15
2023 Acidusus aculeatus (Angelin, 1851) — Weidner et al. , pp. 28, fig. 15A–O
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Trilobita |
| Order | Agnostida |
| Family | Ptychagnostidae |
| Genus | Acidusus |
| Species | aculeatus |
| atavus |