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Spelaeogriphacea are reported for the first time from Australia. A new genus and species, Mangkurtu mityula, are described and the only other two genera diagnosed. The species, the third extant in the order, seems more similar to the Brazilian Potiicoara brasiliensis than to the South African Spelaeogriphus lepidops,ut all have unique apomorphies. The species is found in the aquifer in the Tertiary Millstream Dolomite of the Pilbara region of Western Australia. It is part of a fauna with clear Gondwanan affinities. This fauna is distinct from those found in aquifers in the lower and upper parts of the same drainage basin.