Class [Mammalia] Linnaeus, 1758 - mammals Order Marsupialia Jameson, 1818 - marsupials see Cohort Marsupialia Jameson, 1818 Family Caenolestidae Trouessart, 1898 - "shrew" opossums Genus Caenolestes Thomas, 1895 - common "shrew" opossums Caenolestes caniventer Anthony, 1921