Class [Mammalia] Linnaeus, 1758 - mammals Order †Plesiadapiformes Simons & Tattersall, 1972 see Suborder Plesiadapiformes Simons & Tattersall, 1972 Superfamily †Microsyopoidea Osborn & Wortman, 1892 Family †Microsyopidae Osborn, 1892 Genus †Berruvius Russell, 1964 †Berruvius gingerichi Russell, 1981 see Sarnacius gingerichi (Russell, 1981)