FIGURE 6 in Geometric morphometrics in ammonoids based on virtual modelling

FIGURE 6. Transformations from negative to positive values in PC2. A) Semilandmark configuration at PC2=-0.3 showing the x (red) and y (blue) vectorial components towards PC2 positive values. B) Semilandmark configuration at PC2=0.3 obtained from the transformation in A. C). Translations for each semilandmark in the x-axis for PC2. Empty bars illustrate the closest covariation pattern from Figure 4; in this case, a localized compression in the peripheric landmarks (2 to 4 and 11 to 13). D) Translations for each semilandmark in the y-axis for PC2. Empty bars illustrate the closest covariation pattern from Figure 4; in this case, an elongation with an increase in the involution degree of the whorl cross-section.