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. 2017 Apr 5;372(1717):20160075. doi: 10.1098/rstb.2016.0075

Figure 1.

Figure 1.

(a) Heinrich Sprankel's preparation of the eye and brain of T. bancanus [48] illustrates the similar volume of the two structures [46]. The eyes of T. bancanus are therefore enormous, both in absolute size and in proportion to the size of the 120–134 g animal. Polyak [49] concluded that the eye size relative to body size of tarsiers is unsurpassed by any mammal. (b) Geographical distribution of M- and L-opsins in Tarsius. (c) Covariation between M- and L-opsins and orbit size (tarsier illustrations © Stephen D. Nash/IUCN SSC Primate Specialist Group, reproduced with permission; skulls after Musser and Dagosto [47], drawn to scale).