Class Mammalia Linnaeus, 1758 - mammals Subclass Theria Parker & Haswell, 1897 Order Artiodactyla Owen, 1848 - even-toed ungulates see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997 Family Tayassuidae Palmer, 1897 (1849) - peccaries Genus Catagonus Ameghino, 1904 - Chacoan peccary Catagonus wagneri (Rusconi, 1930) - Chaco peccary