Fig. 4 in A Review of the Mongolian Cretaceous Dinosaur Saurornithoides (Troodontidae: Theropoda)

Fig. 4. Illustrations of the holotype skull of Saurornithoides mongoliensis in right lateral (top), ventral (middle), and dorsal (bottom) views (after Osborn, 1924). The original illustrations show some inaccuracies (e.g., the interfenestral bar is illustrated on the right side but preserved only on the left side). The abbreviations used by Osborn do not necessarily correspond to those in appendix 1. Those that differ include: af1, antorbital fenestra; af2, maxillary fenestra; boc, basioccipital; cb, cerebrum; cbl, cerebellum; ju, jugal; la, lacrimal; mf, mandibular fenestra; na, nasal; nar, external naris; pa, parietal; q, quadrate.