Genus
Ptychometopus Schmidt, 1894
List of species
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Trilobita |
| Order | Phacopida |
| Suborder | Calymenina |
| Family | Pharostomatidae |
| Genus | Pharostoma |
| Prionocheilus | |
| Ptychometopus | |
| Species | schmidti |
| volborthi |
See also