Class Mammalia Linnaeus, 1758 - mammals †"Symmetrodontans" Simpson, 1925, incertae sedis see Infraclass Symmetrodonta Simpson, 1925 Family †Woutersiidae Sigogneau-Russell & Hahn, 1995 [monotypic] Genus †Woutersia Sigogneau-Russell, 1983 †Woutersia butleri Sigogneau-Russell & Hahn, 1995