Species
Ptychometopus schmidti Balashova, 1966
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Trilobita |
| Order | Phacopida |
| Suborder | Calymenina |
| Family | Pharostomatidae |
| Genus | Ptychometopus |
| Species | schmidti |
| volborthi |
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Trilobita |
| Order | Phacopida |
| Suborder | Calymenina |
| Family | Pharostomatidae |
| Genus | Ptychometopus |
| Species | schmidti |
| volborthi |