Class [Mammalia] Linnaeus, 1758 - mammals Order Marsupialia Jameson, 1818 - marsupials see Cohort Marsupialia Jameson, 1818 Family Petauridae Bonaparte, 1838 - gliding, ring-tailed, and striped possums Genus Gymnobelideus McCoy, 1867 - Leadbeater's possum 1 Gymnobelideus leadbeateri McCoy, 1867 - Leadbeater's possum