Fig. 4
From: Shell biomechanics suggests an aquatic palaeoecology at the dawn of turtle evolution

von Mises stress (VMS) contour plots in ventral view of the studied taxa, subjected to different predation scenarios (a-e, cases 1 to 5). Colourmaps are scaled to 6 MPa peak VMS, with values above that represented by grey shades. For each case, the left top and bottom right plots of each taxon show the results of attached (A) and detached (D) models.