Species
Ptychopyge angustifrons (Dalman, 1827)
Synonymy list
1827 Asaphus angustifrons — Dalman , pp. 239, fig. 3:2
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Klassificering
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Trilobita |
| Order | Asaphida |
| Superfamily | Asaphoidea |
| Family | Asaphidae |
| Genus | Ptychopyge |
| Species | angustifrons |
| broeggeri | |
| excavato-zonata | |
| gladiifera | |
| herambensis | |
| janischewskyi | |
| knyrkoi | |
| lesnikovae | |
| minor | |
| rossica | |
| volkhovense |