Fig. 1

Variation along the costal sequence (1–10) of r² of linear regressions for centroid size (CS; grey) and tubercle-ventral chord (TVC; yellow) on TLC, as well as exponential regression of tubercle-ventral arch (TVA_sml; azul) on TLC. For every rib, except for ribs 1, correlations were greater using TVA_sml than using TVC or CS