F igure J in A PArtial Skeleton of the Tyrannosaurid Dinosaur Aublysodon from the Upper Cretaceous of New Mexico

F igure J—Comparison of tyrannosaurid frontal bones in dorsal view. 1, Aublysodon mirandus (LACM 28471). 2, cf. Aublysodon sp. (TMP 80.16.485). 3, Aublysodon cf. A. mirandus (OMNH 10131). 4, Nanotyrannus lancensis (CMNH 5741). 5, Albertosaurus libratus (AMNH 5664). 6, Albertosaurus libratus (USNM 12814). 7, Daspletosaurus torosus (NMC 8506). Sutures for adjacent bones are shown: f, frontal; fn, notch in frontal (also indicated by arrow); 1, lacrimal; n, nasal; p, parietal; pf, prefrontal; po, postorbital; stf, border of supratemporal fenestra. Scale bar 10 cm. 1 and 5 are adapted from Molnar (1978), 2 from Currie (1987), 4 from Bakker et al. (1988), 6 and 7 from Russell (1970).