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We describe a new extinct subspecies of the Javan lutung—Trachypithecus auratus sangiranensis—based on an isolated, tooth-bearing upper jaw. The specimen was in volcanic breccia situated between the Lower Pucangan and the Upper Kalibeng Formations 500 m south of the village of Sangiran, near Surakarta, central Java, Indonesia. The new fossil monkey bears morphological similarities to the two living species of leaf monkey from Java,...
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