Figure 1

Rostral anatomy of select theropods. Rostrum of Halszkaraptor after Cau et al.³² in lateral (A) and dorsal (B) views. Rostrum of Erlikosaurus after Lautenschlager et al.¹⁹ in (C) lateral and dorsal (D) views. Rostrum of Jianchangosaurus after Pu et al.¹⁸ in (E) lateral view. Rostrum of Harpymimus after Kobayashi and Barsbold⁴⁶ in (F) lateral view. Rostrum of Tsaagan (cast) in (G) lateral view. Rostrum of Velociraptor in (H) lateral and (I) ventral views. Rostrum of Gorgosaurus (cast) in (J) lateral view nar, naris; pmf, premaxillary foramina; max, maxilla; pmd, premaxillary dentition; md, maxillary dentition. Scale bar = 9 mm (A,B), 100 mm (C,D), 50 mm (E–F), 10 mm (G), 20 mm (H–I).