Class Mammalia Linnaeus, 1758 - mammals Count: 29o;11f;21g; ‡1f Subclass Prototheria Gill, 1872 - monotremes Count: [*] 1o;2f;3g;5s;9ss Order Monotremata Bonaparte, 1837 - monotremes Count: [*] 2f;3g;5s;9ss 1 Family Tachyglossidae Gill, 1872 - spiny anteaters Count: [*] 2g;4s;9ss 2 Family Ornithorhynchidae Gray, 1825 - platypuses Count: [*] 1g;1s