Northern marsupial mole. Marsupial moles are a family (Notoryctidae) of cladotherian mammals of the order Notoryctemorphia. They are rare and poorly understood burrowing mammals of the deserts of Western Australia, with an ancestry going back 20 million years or so. Once classified as monotremes, they are now thought to be marsupials. Marsupial moles spend most of their time underground, coming to the surface only occasionally, probably mostly after rains. They are blind.