Darwinius is a genus of strepsirrhine primates from the middle Eocene epoch. The only known fossil, a juvenile female named Ida, was discovered in 1983 in the Messel pit, Germany. After the amateur excavation the fossil was divided into a slab and partial counterslab, which were sold separately and not reassembled until 2007. Two years later, the species was formally described.Photograph: Jens L. Franzen, Philip D. Gingerich, Jörg Habersetzer1, Jørn H. Hurum, Wighart von Koenigswald, B. Holly Smith