The Nautilina, proposed by Shimanskiy, is basically the Nautilaceae of Kummel, 1964, defined by Furnish and Glenister, but differs in omitting two families, the Paracenoceratidae and Pseudonautilidae which instead are placed in the Liroceratina.
The proposed Nautilina, a redefinition of the Nautilaceae as defined by Kummel in 1964, differs from this definition by excluding two families: Paracenoceratidae and Pseudonautilidae, which are now placed within the Liroceratina group.