Fig. 4. The largest (gray shading) and smallest (black shading) medial cortex lesions in turtles reconstructed in coronal sections according to the atlas ofPowers and Reiner (1980). ca, Central nucleus of the amygdala; cn, core nucleus of dvr; d, area d; dc, dorsal cortex; dvr, dorsal ventricular ridge; gp, globus pallidus;lnot, lateral nucleus of the olfactory tract;ma, medial nucleus of the amygdala; mc, medial cortex; ot, optic tract; pa, paleostriatum augmentatum; pc, pyriform cortex;ph, primordium hippocampi; pv, periventricular nucleus of the hypothalamus; pt, pallial thickening; r, nucleus rotundus; v, ventricle.