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Fig. 9. Plots of D-values derived by applying the rotation method to
scaling of neonatal body mass for primate species (data from
Smith and Leigh, 1998).
Rotation of the data in rads is indicated on the abscissa. (A) For the entire
sample (N=109), a global minimum (thick vertical line) is located at
0.742 rads, corresponding to
=0.916. However, an additional local
minimum value (thin vertical line) is located at 0.558 rads, corresponding to
=0.624. (B) For strepsirrhine primates taken alone (N=28), the
curve is somewhat irregular because of the small sample size, but there is a
global minimum located at 0.603 rads, corresponding to
=0.688. (C) For
haplorhine primates taken alone (N=81), the sample size is
considerably larger and there is a clear single global minimum located at
0.711 rads, corresponding to
=0.862.