Pseudozioidea is a superfamily of

crab Crabs are decapod crustaceans of the infraorder Brachyura (meaning "short tailed" in Greek language, Greek), which typically have a very short projecting tail-like abdomen#Arthropoda, abdomen, usually hidden entirely under the Thorax (arthropo ...

s, formerly treated in the Eriphioidea, Carpilioidea,

Xanthoidea Xanthoidea is a Taxonomic rank, superfamily of crabs, comprising seven families. Formerly, a number of other families were included in Xanthoidea, but many of these have since been removed to other superfamilies. These include Carpilioidea, Eriph ...

, Pilumnoidea and Goneplacoidea. A number of

fossil A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserve ...

s from the

Eocene The Eocene ( ) is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes ...

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

References

Crabs Extant Eocene first appearances Decapod families {{Eubrachyura-stub