. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 340 Bulletin Museum of Comparative Zoology, Vol. 146, No. 7. Figure 9. Femur of Saurosuctius, composite drawing. X 1/3- pubis, it would appear that the bone thinned considerably in its anterior portion below the rounded dorsal margin. Femur. The femur is known from two nearly complete specimens. The complete proximal half of the femur is well preserved in specimen PVL 2557, and was found articulated with the corresponding pelvis. It is well-preserved material but appears to be slightly compressed. PVL 2267, the other
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 340 Bulletin Museum of Comparative Zoology, Vol. 146, No. 7. Figure 9. Femur of Saurosuctius, composite drawing. X 1/3- pubis, it would appear that the bone thinned considerably in its anterior portion below the rounded dorsal margin. Femur. The femur is known from two nearly complete specimens. The complete proximal half of the femur is well preserved in specimen PVL 2557, and was found articulated with the corresponding pelvis. It is well-preserved material but appears to be slightly compressed. PVL 2267, the other femur, consists of a complete shaft but lacks the extreme articular surfaces at both ends. This specimen was figured by Reig (1961) and shows a slight intertro- chanteric depression. The depression is a deformation of the particular specimen and not a true anatomical feature. In its overall aspect, the femur of Sauro- suchus is of the crocodile type rather than like that of the dinosaurs. The proximal portion is a flange with a wedge-shaped articular head. The shaft is gently sigmoid and oval-shaped in cross section. Distally the termination flares out to what must have been large articular condyles. Owing to the defoi-mation of PVL 2267, it is not possible to determine the degree of rotation of the two extremes, but it appears to have been slightly greater than that of crocodiles. The proximal articulation consists of a rugose tear-drop-shaped surface, the broad portion of which forms a continuation of the thick anterior border of the femur. Be- hind this section the bone thins rapidly to the posterior edge. In PVL 2557 the broad portion is cm thick, the tapered poste- rior edge is 2 cm. Curvature of the head in toward the acetabulum takes the form of an arc along the anterior border and reaches a maximum of 4 cm of inward displacement from the shaft. There is no fonnation of structures that can be defined as greater or lesser trochanters. The an- terior border of the femu
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