Fig 5. Ischigualasto Vertebrate Femoral Cross-Sections in Plane Polarized Light (PPL) and Cross-Polarized Light (XPL) with Lambda Compensator.

For each taxon PPL images are on the left; XPL/lambda compensator images are on the right. Anterior is toward the top. A and B, Sillosuchus (PVSJ 085); Scale = 10 mm. C and D, Saurosuchus (PVSJ 047); Scale = 10 mm. E and F, Trialestes (PVSJ 368); Scale = 10 mm.