Species
Hydrocephalus vikensis Rushton et Weidner, 2007
Synonymy list
2007     Hydrocephalus vikensis sp. nov. — Rushton & Weidner , pp. 398, fig. 1:11-15; 2:1,3-8; 3:1?,2?,3-5,6?,7?,8-19
2016     Hydrocephalus vikensis Rushton & Weidner, 2007 — Rushton et al. , pp. 548, fig. 20B, 29B, D, E, G, 30B, C, D, 31B
Selection of related publications
Rushton, A., Weidner, T., Ebbestad, J. 2016. Paradoxidid trilobites from a mid-Cambrian (Series 3, stage 5) limestone concretion from Jämtland, central Sweden.  Bulletin of Geosciences   91,   3,   515-552. DOI:10.3140/bull.geosci.1606
Rushton, A. W. A., Weidner, T. 2007. The Middle Cambrian paradoxidid trilobite Hydrocephalus from Jämtland, central Sweden.  Acta Geologica Polonica   57,   4,   391-401.
Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Arthropoda | 
| Subphylum | Trilobita | 
| Order | Redlichiida | 
| Suborder | Redlichiina | 
| Superfamily | Paradoxidoidea | 
| Family | Paradoxididae | 
| Genus | Hydrocephalus | 
| Species | hicksii | 
| spinulosus | |
| vikensis | 
References based on distribution
- Rushton & Weidner, 2007 Middle Cambrian (old nomenclature)
- Rushton et al., 2016 Tännberget quarry Wuliuan