Described in 1981, the genus Biswamoyopterus is regarded as the most mysterious and rarest amongst all flying squirrels. It comprises two species, each known from a single specimen. Recent research described a third species found to inhabit low-altitude forests in Yunnan Province, China.
Click here for original story, New species of flying squirrel from Southwest China added to the rarest and ‘most wanted’
Source: ScienceDaily