Albert Lleal / Fossil rhinoceros molar, between 800,000 and 1,000,000 years old, Terrassa, Spain
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David Pattyn / Grey mouse lemur (Microcebus murinus) at night, Anjajavy Private Reserve, north west Madagascar.
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Konrad Wothe / Mouse lemur (Microcebus murinus) Morondava, Madagascar, Africa. Small repro only.
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Joel Sartore / Photo Ark / Gray mouse lemur (Microcebus murinus) head portrait, Duke Lemur Center. Captive, occurs in Madagascar.
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Joel Sartore / Photo Ark / Gray mouse lemur (Microcebus murinus) portrait, Duke Lemur Center. Captive, occurs in Madagascar.
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Joel Sartore / Photo Ark / Gray mouse lemur (Microcebus murinus) portrait, Duke Lemur Center. Captive, occurs in Madagascar.
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Nick Garbutt / Grey mouse lemur (Microcebus murinus) on tree trunk at night, Kirindy Forest, Madagascar.
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Nick Garbutt / Madame Berthe's mouse lemur (Microcebus berthae) left, world's smallest primate, and Grey mouse lemur (Microcebus murinus) right, held in hand for comparison. Kirindy forest, western Madagasca...