marten thought to be extinct until rediscovered in 1996 on remote camera traps in the Six Rivers National Forest in northern California. Julia Creek dunnart (Sminthopsis douglasi), thought to be extinct until it was rediscovered in the 1990s. Miller's langur (Presbytis canicrus), presumed extinct 2004, rediscovered 2012. Leadbeater's possum (Gymnobelideus leadbeateri), thought to be extinct until 1965. Machu Picchu arboreal chinchilla rat (Cuscomys oblativus), believed extinct since the 1400s or 1500s, but rediscovered in 2009 near Machu Picchu in Peru. Mahogany glider (Petaurus gracilis), described in 1883 and not recorded between 1886 and 1973. An expedition by the Queensland Museum in 1989 found a living population. New Guinea big-eared bat (Pharotis imogene), previously, the species was believed to have been extinct since 1890, when it was last spotted. In 2012, researchers realised that a female bat collected near Kamali was a member of this species. New Holland mouse (Pseudomys novaehollandiae), described by George Waterhouse in 1843, it was re-discovered in Ku-ring-gai Chase National Park, North of Sydney, in 1967. Philippine naked-backed fruit bat (Dobsonia chapmani), in 1996 the species was declared extinct by the IUCN, as none had been sighted since 1964, but the bat was rediscovered in 2000. Pinatubo volcano mouse Roosevelt's muntjac (Muntiacus rooseveltorum), it was re-discovered in Xuan Lien Nature Reserve in Vietnam's Thanh Hoa province in 2014. San Quintin kangaroo rat (Dipodoys gravipes), previously seen in 1986, feared extinct until rediscovery in 2017. Santiago Galápagos mouse (Nesoryzomys swarthi), thought extinct and last recorded in 1906, but was rediscovered in 1997. Short-footed Luzon tree rat (Carpomys melanurus), believed extinct since 1896, but rediscovered in 2008 on Mount Pulag in northern Luzon. Tammar wallaby (Macropus eugenii), the mainland Australian subspecies was presumed extinct from 1925 until genetically matched with invasive wallabies in New Zealand in 1998. Vietnam mouse-deer (Tragulus versicolor), last known from a specimen acquired from hunters in 1990, not seen again for nearly 30 years until multiple individuals were sighted with camera-trap photographs in a 2019 survey of prospective habitat. Woolly flying squirrel (Eupetaurus cinereus), known only from pelts collected in Pakistan in the late 19th century, until live specimens were collected in the 1990s. Wimmer's shrew (Crocidura wimmeri), believed extinct since 1976, but rediscovered in 2012 in Côte d'Ivoire. Yellow-tailed woolly monkey (Lagothrix flavicauda), first described from furs in 1812, live specimens not discovered until 1926. Reptiles Albany adder (Bitis albanica), rediscovered in 2016. Arakan