FIGURE 7 in Geometric morphometrics in ammonoids based on virtual modelling

FIGURE 7. Transformations from negative to positive values in PC3. A) Semilandmark configuration at PC3=-0.3 showing the x (red) and y (blue) vectorial components towards PC3 positive values. B) Semilandmark configuration at PC3=0.3 obtained from the transformation in A. C). Translations for each semilandmark in the x-axis for PC3. Empty bars illustrate the closest covariation pattern from Figure 4; in this case, there is a weak adjustment to a compression of the whorl cross-section. D) Translations for each semilandmark in the y-axis for PC2. Empty bars illustrate the closest covariation pattern from Figure 4; in this case, a weak adjustment to a compression of the whorl cross-section. Note that most of the variation is in semilandmarks 3, 6, 12, and 15 that define the vertical location of the whorl width with respect to the whorl cross-section.