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. 1999 Mar 2;96(5):2559–2562. doi: 10.1073/pnas.96.5.2559

Figure 2.

Figure 2

Box and whisker diagrams of dimorphism among extant anthropoids within “competition levels” from Plavcan and van Schaik (1, 6). The dotted lines illustrate the estimated level of dimorphism in Catopithecus and Proteopithecus. Asterisks and circles are isolated extant taxa.