Zyzomys argurus Zyzomys maini Zyzomys palatilis Zyzomys penduculatus Zyzomys woodwardi
Zyzomys is a genus of rodents with unusually thick, long tails. Five species of the genus are known in Australia, where they are called rock rats or thick-tailed rats.
The Laotian rockrat or kha-nyou (Laonastes aenigmamus), sometimes called the "rat-squirrel", is a rodent species of the Khammouan region of Laos.
In 2006 the classification of the Laotian rockrat was disputed by Mary Dawson and coauthors.
The most recent incident prior to the discovery of the family Laonastidae of the Laotian rockrat by Western science was the discovery of the bumblebee bat (Craseonycteris thonglongyai; family Craseonycteridae) in 1974.