Ægir Danielssen, 1888 accepted as Halcampoides Danielssen, 1890 (basis of record)
Ægir Danielssen, 1888 accepted as Halcampoides Danielssen, 1890 (extant flag source)
Aiptasiomorphidae Carlgren, 1949 (basis of record)
Aiptasiomorphidae Carlgren, 1949 (extant flag source)
Aurelianidae (extant flag source)
Aurelianidae (basis of record)
Bathyphellidae accepted as Bathyphelliidae Carlgren, 1932 (basis of record)
Bathyphellidae accepted as Bathyphelliidae Carlgren, 1932 (extant flag source)
Edwardsiella Andres, 1883 (basis of record)
Edwardsiella Andres, 1883 (extant flag source)
Iosactiidae Riemann-Zürneck, 1997 (extant flag source)
Iosactiidae Riemann-Zürneck, 1997 (basis of record)
Preactiidae England in England & Robson, 1984 accepted as Preactiniidae England in England & Robson, 1984 (basis of record)
Preactiidae England in England & Robson, 1984 accepted as Preactiniidae England in England & Robson, 1984 (extant flag source)