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Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Cladus: Pancrustacea
Superclassis: Multicrustacea
Classis: Malacostraca
Subclassis: Eumalacostraca
Superordo: Peracarida
Ordo: Isopoda
Subordo: Phreatoicidea
Familiae: Amphisopodidae - Hypsimetopidae - Mesamphisopidae - Phreatoicidae - Ponderellidae - †Palaeophreatoicidae


Wilson, G.D.F. 2008: Gondwanan groundwater: subterranean connections of Australian phreatoicidean isopods to India and New Zealand. Invertebrate systematics, 22: 301–310. DOI: 10.1071/IS07030
World List of Marine, Freshwater and Terrestrial Isopod Crustaceans
Checklist to Australian Species of Phreatoicidea

Vernacular names
中文: 坑水虱亚目

Phreatoicidea is a suborder of isopod crustaceans. Extant species are confined to freshwater environments in South Africa, India, and Oceania.[2] This seemingly Gondwana-derived distribution belies the fact that the group once had a cosmopolitan distribution; fossils which can be assigned to the Phreatoicidea are the oldest isopod fossils, and are found throughout the world.[3][4] In the intervening 325 million years, phreatoicideans have changed little, and are thus considered living fossils.[5]

The first Australian phreatoicidean was described by Charles Chilton in 1891.[5] Two families are represented in Australia: Amphisopodidae in the interior of Australia, and in the west, and Phreatoicidae in New South Wales, Victoria and Tasmania.[6]
See also



"Phreatoicidea". Integrated Taxonomic Information System.
J. K. Lowry. "Phreatoicidea (Isopoda, Peracarida, Malacostraca)". Crustacea: The Higher Taxa. Australian Museum. Retrieved February 20, 2009.
Richard Brusca (August 6, 1997). "Isopoda". Tree of Life Web Project.
Frederick R. Schram (1970). "Isopod from the Pennsylvanian of Illinois". Science. 169 (3948): 854–855. doi:10.1126/science.169.3948.854. PMID 5432581.
Buz Wilson. "About phreatoicidean isopods in Australia". University of Sydney. Archived from the original on September 8, 2008. Retrieved February 20, 2009.
Buz Wilson. "Localities of Australian Phreatoicidea". University of Sydney. Archived from the original on October 8, 2008. Retrieved February 20, 2009.


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