Fig. 1
From: LemurFaceID: a face recognition system to facilitate individual identification of lemurs
Examples of different lemur species. Photos by David Crouse (Varecia rubra, Eulemur collaris, and Varecia variegata at the Duke Lemur Center), Rachel Jacobs (Eulemur rufifrons in Ranomafana National Park), and Stacey Tecot (Hapalemur griseus, Eulemur rubriventer in Ranomafana National Park; Propithecus deckenii in Tsingy de Bemaraha National Park; Indri indri in Andasibe National Park)