FIGURE 6. Restored skull with occluded jaws of a Stage 1 Tyrannosaurus rex (CMNH 7541) in left lateral (A), dorsal (B), occipital (C), and palatal (D) views. Skull length is 572 mm. Rostral and transverse crushing of the suspensorium in A and B has not been corrected. Basisphenoid pneumatic foramina are restored in D; right squamosal is restored in B; occipital condyle is restored in C. Abbreviations: ang, os angulare; ar, os articulare; bo, os basioccipitale; bs, os basisphenoidale; bs rec cl, basisphenoid recess ceiling; co, os coronoideum; cr sag, crista sagittalis; dn, os dentale; ect, os ectopterygoideum; imf, fenestra intramandibulare; ipv, vacuita interpterygoideum; la, os lacrimale; mx, os maxillare; na,