Genus
Praetrilogania Blom, 1999
Luokittelu
Organism group | Biota |
Kingdom | Animalia |
Phylum | Chordata |
Subphylum | Vertebrata |
Superclass | Agnatha |
Class | Pteraspidomorphi |
Subclass | Thelodonti |
Order | Shieliiformes |
Family | Shieliidae |
Genus | Nethertonodus |
Paralogania | |
Praetrilogania | |
Shielia | |
Valiukia |