Extended Data Fig. 9: Pedal proximal phalanx morphology in KNM-ER 101000. | Nature

Extended Data Fig. 9: Pedal proximal phalanx morphology in KNM-ER 101000.

From: New fossils reveal the hand of Paranthropus boisei

Extended Data Fig. 9: Pedal proximal phalanx morphology in KNM-ER 101000.

Relative length and proximal articular surface morphology of the KNM-ER 101000 pedal proximal phalanges. (a) Dorsal canting angle of the hallucal proximal phalanx. (b) Proximal articular angle of the non-hallucal pedal proximal phalanx. (c) PP1 to PP5 length ratio. (d) PP5 length to base mediolateral breadth ratio. Note that KNM-ER 101000 has a non-hallucal proximal phalanx articular angle within the range of the fossil Homo sample combined with intrinsic length reduction compared to Ar. ramidus and A. afarensis. In each boxplot (a-d) the median is indicated by a horizontal line, the box spans the interquartile range (IQR), and the whiskers represent the minimum and maximum values in the sample.

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