Relating to Australia and its surrounding regions of New Guinea, Indonesia, and the south west Pacific Ocean.

A native or inhabitant of Australasia.

plural of Australasian

(entomology) A subspecies of libellulid dragonfly, Lathrecista asiatica festa, endemic to northern Australia.

plural of Australasian slimwing

plural of Australasian figbird

A species of figbird, Sphecotheres vieilloti, of Australia and New Guinea.

plural of Australasian pig-nose turtle

Carettochelys insculpta, a species of soft-shelled turtle native to freshwater streams, lagoons and rivers of the Northern Territory of Australia and of southern New Guinea.