Pteraspidomorpha - Pteraspidiformes - Psammosteidae
Parent taxon: Pteraspidoidei according to E. Randle and R. S. Sansom 2017
See also Jordan 1963, Moloshnikov 2009 and Nelson et al. 2016
Sister taxa: Alaeckaspis, Blieckaspis, Djurinaspis, Doryaspidae, Eucyclaspis, Lamiaspis, Larnovaspis, Mylopteraspidella, Oreaspis, Panamintaspis, Parapteraspis, Pirumaspis, Protaspididae, Pteraspis, Rhinopteraspididae, Unarkaspis
Subtaxa: Drepanaspis Dyptychosteus Ganosteus Oredezhosteus Placosteus Psammosteinae Psammosteus Pycnosteus Vladimirolepis
Ecology:
Distribution:
• Carboniferous of Ireland (1 collection), the United Kingdom (1)
• Devonian of Belarus (9), Canada (1: Nunavut), Estonia (9), Germany (4), Greenland (1), Latvia (5), the Russian Federation (14), Svalbard and Jan Mayen (1), the United Kingdom (3)
Total: 49 collections including 81 occurrences