Scaletail

There is to be found in Africa, only, a flying-squirrel so different in structure and relationships that it is held to represent a separate order by some zoölogists, — the anomalurus lurus, or "scaletail."

Source: wiktionary

The most generalised member of the family is the flightless scaletail (Zenkerella insignis) of West Africa, which has the appearance of a small grey squirrel, although furnished with scales on the tail.

Source: wiktionary

Scaly-tailed flying squirrels, or scaletails, are placed in 4 genera and about 12 species, all but one of which, the flightless scaletail (Zenkerella insignis), possess gliding membranes.

Source: wiktionary

It can be found both in the capybara and the harvest mouse, in the beaver and the squirrel, and in the meadow mouse and the scaletail.

Source: wiktionary