The Bramble Cay Melomys ( Melomys rubicola) has one of the most unusual and precarious distributions of all Australian mammals. The melomys is restricted to an unstable 4-5 hectare coral.

The tiny Bramble Cay melomys (also known as the Bramble Cay mosaic-tailed rat, Melomys rubicola) has been declared extinct by the government of Queensland, Australia after an exhaustive.