noun
Australian zoogeographical region
A technical term in biogeography referring to the faunal region encompassing Australia, New Guinea, and nearby islands.
カモノハシはオーストラリア区の固有種です。
The platypus is an endemic species of the Australian zoogeographical region.
Compound of オーストラリア (Australia) and 区 (region/zone), a direct calque of the English term 'Australian region' used in zoogeography.