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Range DescriptionThis species is known only from the Tsingy de Bemaraha region of western Madagascar, north of the Manambolo River (Thalmann and Geissman 2005). The northern limit of its range is unclear and there is no evidence of its occurrence between the Sambao and Mahavavy Rivers or between the Mahavavy and Betsiboka Rivers (Thalmann and Geissmann 2005). Currently, it is known only from within Tsingy de Bemaraha National Park, where it has been sighted in two localities, in the forest of Ankindrodro (19°08′S, 44°49′E;) and the type locality (18°59′S, 44°45′E), a forest 3–4 km east-northeast of the village of Ambalarano at the base of the western Tsingy precipice (Thalmann and Geissmann 2006). The species was previously outside the reserve’s boundaries in 1994, in the heavily disturbed forest in the surroundings of the village of Ankinajao (19°03′S, 44°47′E; Thalmann and Geissmann 2000). However, the forest was completely destroyed since these sightings at Ankinajao, and no woolly lemurs have been found there since 2003 (Thalmann and Geissmann 2006). The estimated extent of occurrence (EOO) is less than 3,000 km².