Ancyracanthidae accepted as Gnathostomatidae Railliet, 1895 (basis of record)
Bunocotylidae (basis of record)
Dipetalonematidae Wehr, 1935 accepted as Onchocercidae Leiper, 1911 (basis of record)
Gorgonidae accepted as Gorgoniidae Lamouroux, 1812 (basis of record)
Haplosplanchidae (basis of record)
Hymenolepidae (basis of record)
Lecithasteridae Odhner, 1905 (basis of record)
Olindiadidae (basis of record)
Siderasteridae (basis of record)
Stephanofilariidae accepted as Filariidae Weinland, 1858 (basis of record)