Pseudozioidea
Encyclopedia
Pseudozioidea is a superfamily of crab
s, formerly treated in the Eriphioidea
, Carpilioidea, Xanthoidea
, Pilumnoidea
and Goneplacoidea
. A number of fossil
s from the Eocene
onwards are known from the family Pseudoziidae. Eleven genera are recognised in three families:
Crab
True crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" , or where the reduced abdomen is entirely hidden under the thorax...
s, formerly treated in the Eriphioidea
Eriphioidea
Eriphioidea is a superfamily of crabs, containing the six families Dairoididae, Eriphiidae, Hypothalassiidae, Menippidae, Oziidae and Platyxanthidae. They are united by a number of characters, including a marked difference in size between the left and right claws, where the larger one has a...
, Carpilioidea, Xanthoidea
Xanthoidea
Xanthoidea is a superfamily of crabs, comprising the three families Xanthidae, Panopeidae and Pseudorhombilidae. Formerly, a number of other families were included in Xanthoidea, but many of these have since been removed to other superfamilies. These include Carpilioidea, Eriphioidea, Hexapodoidea,...
, Pilumnoidea
Pilumnoidea
Pilumnoidea is a superfamily of crabs, whose members were previously included in the Xanthoidea. The three families are unified by the free articulation of all the segments of the male crab's abdomen and by the form of the gonopods...
and Goneplacoidea
Goneplacoidea
Goneplacoidea is a superfamily of crabs containing 10 extant families, and two families known only from fossils....
. A number of fossil
Fossil
Fossils are the preserved remains or traces of animals , plants, and other organisms from the remote past...
s from the Eocene
Eocene
The Eocene Epoch, lasting from about 56 to 34 million years ago , is a major division of the geologic timescale and the second epoch of the Paleogene Period in the Cenozoic Era. The Eocene spans the time from the end of the Palaeocene Epoch to the beginning of the Oligocene Epoch. The start of the...
onwards are known from the family Pseudoziidae. Eleven genera are recognised in three families:
- Pilumnoididae Guinot & Macpherson, 1987
- Pilumnoides Lucas, 1844
- Planopilumnidae Serène, 1984
- Haemocinus Ng, 2003
- Planopilumnus Balss, 1933
- Platychelonion Crosnier & Guinot, 1969
- 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