Pseudozioidea

Pseudozioidea is a superfamily of crabs, formerly treated in the Eriphioidea, Carpilioidea, Xanthoidea, Pilumnoidea and Goneplacoidea. A number of fossils from the Eocene onwards are known from the family Pseudoziidae. Eleven genera are recognised in three families:
 * Christmaplacidae Naruse & Ng, 2014
 * Christmaplax Naruse & Ng, 2014
 * Harryplax Mendoza & Ng, 2017
 * Pilumnoididae Guinot & Macpherson, 1987
 * Pilumnoides Lucas, 1844
 * Setozius Ng & Ahyong, 2013
 * Planopilumnidae Serène, 1984
 * Flindersoplax Davie, 1989
 * Haemocinus Ng, 2003
 * Planopilumnus Balss, 1933
 * Platychelonion Crosnier & Guinot, 1969
 * Rathbunaria Ward, 1933
 * Pseudoziidae Alcock, 1898
 * Archaeozius † Schweitzer, 2003
 * Euryozius Miers, 1886
 * Flindersoplax Davie, 1989
 * Priabonocarcinus † Müller & Collins, 1991
 * Pseudozius Dana, 1851
 * Santeexanthus † Blow & Manning, 1996
 * Tongapapaka † Feldmann, Schweitzer & McLaughlin, 2006