spatial data: IUCN (International Union for Conservation of Nature) 2008. Glaucomys volans. In: IUCN 2014. The IUCN Red List of Threatened Species. Version
spatial data: IUCN (International Union for Conservation of Nature) 2008. Glaucomys sabrinus. In: IUCN 2014. The IUCN Red List of Threatened Species. Version