Three new species of mammals were discovered in the forests of Papua New Guinea by an Australian-led expedition in the early 2010s. A small wallaby, a large-eared mouse and shrew-like marsupial were discovered. The expedition was also successful in capturing photographs and video footage of some other rare animals such as the Tenkile tree kangaroo and the Weimang tree kangaroo. Nearly one quarter of Papua New Guinea's rainforests were damaged or destroyed between 1972 and 2002. Papua New Guinea had a Forest Landscape Integrity Index mean score of 8.84/10, ranking it 17th globally out of 172 countries. Mangrove swamps stretch along the coast, and in the inland it is inhabited by nipa palm (Nypa fruticans), and deeper in the inland the sago palm tree inhabits areas in the valleys of larger rivers. Trees such as oaks, red cedars, pines, beeches are becoming predominantly present in the uplands above 3,300 feet. Papua New Guinea is rich in various species of reptiles, indigenous freshwater fish and birds, but it is almost devoid of large mammals.