The Species Black List
Funisciurus duchaillui
Du Chaillu's striped squirrel
Du Chaillu's striped squirrel (Funisciurus duchaillui) is known only from a small area of central Gabon between the Ogooué River and Massif du Chaillu.
Status Data Deficient on the IUCN Red List Restriction tier 2, restricted, extent unclear Class Mammalia Realm Afrotropical Locality Terra firma As IUCN records it Funisciurus duchaillui Sanborn, 1953 This species is one of 3,062 in a list of vertebrates the IUCN Red List records as Data Deficient or has never assessed, ranked by how narrowly restricted the published record says they are. The sentence above is the evidence the tier was read from, quoted from Matthew Richardson, Threatened and Recently Extinct Vertebrates of the World (2023).
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Check this species elsewhere: IUCN Red List · GBIF