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A genus with two extant representatives, both occurring in southeastern Australia (Temperate Australasia realm..East Central Australian Shelf province. Southeast Australian Shelf province). Type species is Eburna australis Sowerby, 1841.
Temperate Australasia realm. East Central Australian Shelf province. Southeast Australian Shelf province. From Fraser Island, Queensland, southward to Western Port, Victoria, and Tasmania, Australia.
Also Lower Miocene of Victoria (chrono-subspecies Zemira australis antecursoria Ponder & Darragh, 1975).
Central Indo-Pacific realm. Northest Australian Shelf province. Swain Reefs, Queensland, to Danger Point (Tweed Heads), New South Wales, Australia.
RV 1444. Australia, Queensland, Cape Moreton, offshore, depth 145 m, 1973. Scale bar is 1 cm.
Late Pliocene. Roe Plains, Western Australia.
RV 5048b. Australia, Western Australia, Roe Plains [Late Pliocene). Scale bar is 1 cm.
Eocene. Spring Creek, near Geelong, Victoria, Australia.