Trilobita
Genus

Hydrocephalus Barrande, 1846

https://files.geocollections.info/large/26/8c/268c112b-b572-4248-9a92-48c934d85bfd.jpg
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
References based on distribution