Aerophasmidae † (basis of record)
Capitosauroidea (awaiting allocation) † (basis of record)
Caridea (awaiting allocation) (basis of record)
Colombitheriidae Hoffstetter, 1970 † accepted as Pyrotheriidae Ameghino, 1889 † (basis of record)
Jalodontidae † (basis of record)
Micryphantidae Bertkau, 1872 (basis of record)
Nugonioneuridae † (basis of record)
Podocyrtidae (basis of record)
Polydiexodinidae Miklukho-Maklay, 1953 † accepted as Schwagerinidae Dunbar & Henbest, 1930 † (basis of record)
Polyptychitidae † (basis of record)
Trematopsidae Williston, 1910 † accepted as Trematopidae Williston, 1910 † (basis of record)
Yarengiidae † (basis of record)