The
Nautilina is the last suborder of the
Nautilida and the only
nautiloids living since the end of the
Triassic. 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.