Genus
Pragnellia Leith, 1952
Aiheeseen liittyvät julkaisut
Kaljo, D., Klaamann, E. 1965. The fauna of the Portrane limestone, III. The Corals. Bulletin of the British Museum (Natural History) Geology 10, 11, 413-434.
List of species
1. Pragnellia arborescens Leith, 1952 | Upper Ordovician
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Cnidaria |
| Class | Anthozoa |
| Subclass | Tabulata |
| Superorder | Heliolitoidea |
| Suborder | Heliolitina |
| Superfamily | Coccoseridicae |
| Family | Coccoserididae |
| Palaeoporitidae | |
| Pycnolithidae | |
| Genus | Pragnellia |
| Species | arborescens |
| Genus | Urceopora |