Bartel's Flying Squirrel was created in 1939.
Arrow Flying Squirrel was created in 1766.
Smoky Flying Squirrel was created in 1873.
Kashmir Flying Squirrel was created in 1837.
Siberian Flying Squirrel was created in 1758.
Rocky the Flying Squirrel was created in 1959.
Chinese Giant Flying Squirrel was created in 1872.
Spotted Giant Flying Squirrel was created in 1840.
Indian Giant Flying Squirrel was created in 1839.
Groove-toothed Flying Squirrel was created in 1867.
Hodgson's Giant Flying Squirrel was created in 1836.
Red-cheeked flying squirrel was created in 1847.
SEGA did not make ray the flying squirrel because he is not an actual character