High Quality Content by WIKIPEDIA articles! Ferugliotherium is a fossil mammal from the Campanian and/or Maastrichtian (Late Cretaceous, around 70 million years ago) of Argentina in the family Ferugliotheriidae. The genus contains a single species, Ferugliotherium windhauseni, which was first described in 1986. Originally interpreted as a member of the extinct mammalian group Multituberculata on the basis of a single brachydont (low-crowned) molar, it was recognized as related to the hypsodont (high-crowned) Sudamericidae after the discovery of additional material in the early 1990s. After the discovery of a jaw of the sudamericid Sudamerica in 1999, these taxa (collectively known as Gondwanatheria) were no longer considered to be multituberculates and a few fossils that were previously considered to be Ferugliotherium were assigned to indeterminate multituberculates instead. Since 2005, a relationship between gondwanatheres and multituberculates has again received support. A closely related animal, Trapalcotherium, was described in 2009 on the basis of a single tooth.