Class Mammalia Linnaeus, 1758 - mammals Subclass Theria Parker & Haswell, 1897 Order Hyracoidea Huxley, 1869 - hyraxes Family Procaviidae Thomas, 1892 - hyraxes Genus Heterohyrax Gray, 1868 - gray hyraxes Heterohyrax brucei (Gray, 1868) - small-toothed rock hyrax Heterohyrax brucei rudolfi (Thomas, 1910)