Pteraspidoidei incertae sedis

Remarks. The following genera are not assigned to a family: Europrotaspis White, 1961, Protaspis Bryant, 1933, Pteraspis Kner, 1847, Blieckaspis Elliott & Ilyes, 1996, Panamintaspis Elliott & Ilyes, 1996, Alaeckaspis Voichyshyn, 1999, Dnestraspis Novitskaya, 1983, Unarkaspis Elliott, 1983, Larnovaspis Blieck, 1984, Eucyclaspis Denison, 1970, Parapteraspis Stensio, 1958, Podolaspis Zych, 1931, Mylopteraspidella Blieck, 1984, Semipodolaspis Voichyshyn, 2011, Oreaspis Denison, 1970, Djurinaspis Novitskaya, 1983, Lamiaspis Ilyes & Elliott, 1994, Pirumaspis Ilyes & Elliott, 1994 .