Class
Pycnogonida Latreille, 1810
Selection of related publications
Waloszek, D., Dunlop, J. A. 2002. A Larval Sea Spider (Arthropoda: Pycnogonida) from the Upper Cambrian 'orsten' of Sweden, and the Phylogenetic Position of Pycnogonids.  Palaeontology   45,   3,   421-446. DOI:10.1111/1475-4983.00244
List of species
1. Cambropycnogon klausmuelleri Waloszek et Dunlop, 2002 | Upper Cambrian (old nomenclature)
Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Arthropoda | 
| Subphylum | Chelicerata | 
| Superclass | Euchelicerata | 
| Class | Arachnida | 
| Merostomata | |
| Pycnogonida | |
| Genus | Cambropycnogon | 
| Class | Xiphosura | 
| Order | Eurypterida |