Species
Geragnostus crassus Tjernvik, 1956
Synonymy list
1956     Geragnastus crassus n. sp. — Tjernvik , pp. 190, fig. I:7, 8. Text-fig. 27 B
Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Arthropoda | 
| Subphylum | Trilobita | 
| Order | Agnostida | 
| Suborder | Agnostina | 
| Family | Metagnostidae | 
| Genus | Geragnostus | 
| Species | crassus | 
| ingrica | |
| lawae | |
| sidenbladhi | |
| splendens |