Ammotheidae Dohrn, 1881 (habitat flag source)
Anoplodactylidae † accepted as Phoxichilidiidae Sars, 1891 (habitat flag source)
Anthozoa incertae sedis (habitat flag source)
Ascorhynchidae Hoek, 1881 (habitat flag source)
Austrodecidae Stock, 1954 (habitat flag source)
Callipallenidae Hilton, 1942 (habitat flag source)
Chilophoxidae accepted as Endeidae Norman, 1908 (habitat flag source)
Cladonychiidae Hadzi, 1935 (habitat flag source)
Colossendeidae Hoek, 1881 (habitat flag source)
Endeidae Norman, 1908 (habitat flag source)
Endeididae accepted as Endeidae Norman, 1908 (habitat flag source)
Erniettomorpha † (extant flag source)
Erniettomorpha † (habitat flag source)
Graptoloidea incertae sedis † (habitat flag source)
Graptoloidea incertae sedis † (extant flag source)
Haliestidae Bamber, 2007 † (habitat flag source)
Iulus accepted as Julus Linnaeus, 1758 (habitat flag source)
Nymphonidae Wilson, 1878 (habitat flag source)
Palaeoisopoda (awaiting allocation) † (habitat flag source)
Palaeoisopodidae Dubinin, 1957 † (habitat flag source)
Palaeopantopodidae Hedgpeth, 1955 † (habitat flag source)
Pallenidae accepted as Callipallenidae Hilton, 1942 (habitat flag source)
Pallenopsidae Fry, 1978 (habitat flag source)
Pantopoda (awaiting allocation) (habitat flag source)
Phoxichilidae accepted as Phoxichilidiidae Sars, 1891 (habitat flag source)
Phoxichilidiidae Sars, 1891 (habitat flag source)
Phoxicilidiidae accepted as Phoxichilidiidae Sars, 1891 (habitat flag source)
Pycnogonida (awaiting allocation) (habitat flag source)
Pycnogonidae Wilson, 1878 (habitat flag source)
Rangeomorpha † (habitat flag source)
Rhynchothoracidae Thompson, 1909 (habitat flag source)
Septemchitonida † (habitat flag source)
Tanystylidae accepted as Ammotheidae Dohrn, 1881 (habitat flag source)
Vologdinophyllida † (habitat flag source)