Aeteidae Smitt, 1868 (additional source)
Alcyonidiidae Johnston, 1837 (additional source)
Arachnidiidae Hincks, 1880 (additional source)
Buskia Alder, 1857 (additional source)
Buskiidae Hincks, 1880 (additional source)
Cyclostomatida (additional source)
Diastoporidae Gregory, 1899 accepted as Plagioeciidae Canu, 1918 (additional source)
Eucrateidae Johnston, 1847 (additional source)
Flustrellidridae Bassler, 1953 (additional source)
Gymnolaemata (additional source)
Hypophorellidae Prenant & Bobin, 1956 (additional source)
Triticellidae Sars, 1874 (additional source)
Victorellidae Hincks, 1880 (additional source)