Texas Australia portal Subcategories This category has the following 13 subcategories, out of 13 total. * Organisations based in Australian External Territories (3 C)A Airports in territories of Australia (3 C, 5 P) Ashmore and Cartier Islands (2 C, 4 P) Australian Antarctic Territory (12 C, 32 P) Australian Indian Ocean Territories (2 C, 1 P)C Coral Sea Islands (4 C, 25 P)H Heard Island and McDonald Islands (3 C, 6 P)I Important Bird Areas of Australian External Territories (7 P)N Territory of New Guinea (5 C, 33 P) Norfolk Island (15 C, 5 P)P Territory of Papua (5 C, 21 P)T Territory of Papua and New Guinea (15 C, 6 P) Treaties extended to dependent territories of Australia (11 C)