Thingodonta is the colloquial name given to an order of extinct Australian mammals, first described in 1988 and known only from the Oligo-Miocene deposits of Riversleigh, northwestern Queensland, Australia.A single genus, Yalkaparidon (from an aboriginal word for boomerang, alluding to the boomerang shape of its molars when seen in occlusal view, and the Greek word for tooth) and two species, Y. coheni and Y. jonesi, have so far been described.