Genus
Proctocystis Regnéll, 1945
Aiheeseen liittyvät julkaisut
Regnéll, G. 1945. Non-Crinoid Pelmatozoa from the Paleozoic of Sweden. A taxonomic study. Meddelanden från Lunds Geologisk-Mineralogiska Institution 108, 1-255. Carl Bloms Boktryckeri.
List of species
1. Proctocystis monstruosa Regnéll, 1945 | Ordovician
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Echinodermata |
| Subphylum | Blastozoa |
| Class | Rhombifera |
| Order | Dichoporita |
| Superfamily | Glyptocystitoida |
| Family | Echinoencrinitidae |
| Subfamily | Gonocrinites |
| Genus | Echinoencrinites |
| Erinocystis | |
| Eutretocystis | |
| Fusicystis | |
| Glaphyrocystis | |
| Proctocystis | |
| Species | monstruosa |
| Genus | Schizocystis |
| Scoliocystis |
Levinneisyys ja viitteet
- Regnéll, 1945 Lower Ordovician