Page:Parasaurolophus walkeri, a new genus and species of trachodont dinosaur.pdf/34

30 measurements given below. The less prominent head in Figure 9, compared with that shown in Plate VI, Fig. 1, is due to the fact that the bone is thrown inwards distally, thus bringing the head into view. The ﬁgure is drawn in true projection.

It will be observed that the lengths of the different femora do not greatly differ. The other measurements are not very reliable, as crushing in many cases seriously affects the proportions of different parts. For instance, it is unlikely that the ﬁgures given above for the widths of the inner and outer condyles are correct. Why should the inner condyle exceed the outer in width in Kritosaurus and the opposite condition maintain in Parasaurolophus?

While the pelvic girdles of trachodonts are distinctive for the different genera, it has not yet been established that the same holds true for the bones of the hind limb, which seem