Fig. 7 in A new tyrannosaurine (Theropoda:Tyrannosauridae) from the Campanian Foremost Formation of Alberta, Canada, provides insight into the evolution and biogeography of tyrannosaurids

Fig. 7. Right postorbital fragment of Thanatotheristes holotype (TMP 2010.5.7). A) Specimen in lateral view, demonstrating arced subcutaneous ridges, B) and medial view. Note prominent bracing ridge for jugal contact on the medial surface of the bone. Abbreviations: br, bracing ridge for jugal contact; djc, dorsal extent of jugal contact; scr, subcutaneous ridges; sr, smooth region along lateral surface posterior margin. Scale bar equals 2 cm.