Hulitherium tomasetti (meaning "Huli beast", after the Huli people) is an extinct zygomaturine marsupial that lived in New Guinea during the Pleistocene. The species name honours Berard Tomasetti, a Catholic priest in Papua New Guinea, who brought the fossils to the attention of experts. A log discovered in the same bed as the holotype was carbon dated to roughly 38,600 ± 2,500 years ago. The Pureni site is a 2,000 m (6,600 ft) marine limestone sequence stretching from the Late Oligocene to the Pliocene, until it was filled in by lava about 850,000 years ago by Mount Iumu during the Middle Pleistocene. Infrequent volcanism in the area continued from Mount Rentoul, Mount Sisa, and Doma Peaks. The most recent deposits dating to the Holocene consist of peat, clay, and ash.