Class [Mammalia] Linnaeus, 1758 - mammals
   Order Marsupialia Jameson, 1818 - marsupials see Cohort Marsupialia Jameson, 1818
     Family Didelphidae Gray, 1821 - American opossums
       Genus Gracilinanus Gardner & Creighton, 1989
         1 Gracilinanus aceramarcae (Tate, 1931) - Aceramarca gracile opossum
         2 Gracilinanus agilis (Burmeister, 1854) - agile gracile opossum
         3 Gracilinanus dryas (Thomas, 1898) - wood sprite gracile opossum
         4 Gracilinanus emiliae (Thomas, 1909) - Emilia's gracile opossum
         5 Gracilinanus marica (Thomas, 1898) - northern gracile opossum
         6 Gracilinanus microtarsus (Wagner, 1842) - Brazilian gracile opossum