. Bulletin - United States National Museum. Science. Fig. 33.—Diagkam showing probable manner op articu- lation OF STEGOSAUEUS sternal bones. J NAT. SIZE. a. Anterior ends; p, postekioe ends; t, sternal eib. quite recently by Gilmore ^ in Thescelosaurus. of this group is likely. Measurements of sternal bones. Greatest length Greatest transverse width, proximal end . No. 7618. No. 7619. No. 7620. 170 S(i mm. 178 156 65 Shoulder Girdle. Scapula.—The scapula is comjjaratively short, and when not flattened by post- mortem causes the inner surface is concave from end to end, ren- dering it conforma
. Bulletin - United States National Museum. Science. Fig. 33.—Diagkam showing probable manner op articu- lation OF STEGOSAUEUS sternal bones. J NAT. SIZE. a. Anterior ends; p, postekioe ends; t, sternal eib. quite recently by Gilmore ^ in Thescelosaurus. of this group is likely. Measurements of sternal bones. Greatest length Greatest transverse width, proximal end . No. 7618. No. 7619. No. 7620. 170 S(i mm. 178 156 65 Shoulder Girdle. Scapula.—The scapula is comjjaratively short, and when not flattened by post- mortem causes the inner surface is concave from end to end, ren- dering it conformable to the con- vex curve of the body wall when articulated. This cuiwature of the scapula also tends to thi'ow the articulated coracoid well in front on the chest, as in Thescelo- saurus, Trachodon, Camptosaurus, and Triceratops. There are seven scapulae in the National Museum collections all showing a downward curve of the bone proximo-cUstally (pi. 21, fig. 3), and not straight, as Marsh has represented tliis element in S. ungulatus. In this respect they approach the scapula of Arvkylosaurus, as figured by Brown. Fig. 34.—Left sternal bone of Trachodon annectens (Marsh). i NAT. SIZE, a, Seen from above; 6, seen from below. After 1 Bull. Amer. Mus. Nat. Hist., vol. 22,1906, pp. 297-300. 2 Smiths Misc. Coll., vol. 61, No. 2184,1913, p. 4. 3 Bull. Amer. Mus. Nat. Hist., vol. 24, p. 196, fig. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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