Pteromys volans; Print; The Siberian flying squirrel (Pteromys volans) is an Old World flying squirrel with a range from the Baltic Sea in the west to the Pacific Coast in the east. It is the only species of flying squirrel found in Europe. It is considered vulnerable within the European Union where it is now found only in Estonia; Finland and Latvia out of the 28 countries in the Union.; 1700-1880