File:The osteology of the trachodont dinosaur Kritosaurus Incurvimanus (1920) (14761318101).jpg

Identifier: cu31924004594895 (find matches)
Title: The osteology of the trachodont dinosaur Kritosaurus Incurvimanus
Year: 1920 (1920s)
Authors: Parks, W. A. (William Arthur), 1868-1936
Subjects: Kritosaurus incurvimanus
Publisher: (Toronto) The University library: pub. by the librarian
Contributing Library: Cornell University Library
Digitizing Sponsor: MSN

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s rounded than in the case ofmost trachodont pubes. The inferior branch for union withthe ischium is slender and the area of contact small. The postpubis is moderately long, relatively stoutproximally, but thin and delicate towards the extremitywhere it is slightly expanded. The pubic notch, betweenthe postpubis and the ischiac branch of the prepubis, is openand without any sign of being transformed into a foramen. The ischium is a longer and more robust bone than thepubis; its proximal portion is flat or slightly convex externallyand with a pronounced inward direction ventrally. Thisportion bears a wide surface for union with the postace-tabular peduncle of the ilium, and a much narrower area forunion with the pubis below the acetabulum. The superiormargin of this proximal portion curves downwards and Hind Limb 49 backwards in a concave sweep passing gradually into theposterior shaftdike section. The inferior margin, also, isslightly concave from the union with the pubis backwards to
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FIG. 16—A, right femur, external view, slightly restored; B, left femur, internal view, somewhat restored by comparison with left. One eighth natural size. gt, great trochanter; It, lesser trochanter; 3t, third trochanter; ic, inner condyle; oc, outer condyle. 50 Kritosaurus incurvimanus the distinct obturator process. Posterior to this process theinferior margin rapidly approaches the superior and passeslikewise into the shaft-like portion. The elongated posterior part of the bone is flattenedinternally and is in contact with its fellow, almost, if notquite, as far forward as the obturator process. Externallyit shows a rather sharp ridge a little ventral to the midline.The distal end is somewhat swollen, almost entirely on theventral side. The femur (Figs. 16 and 17) consists of a comparativelylight shaft and extremities so expanded that the bone has aclumsy appearance. On the internal side the shaft is evenlyrounded, somewhat contracted towards the proximal end,and curved distinct

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