. m P;' ~~~' is Fig. 55.—nium of Claosourus aoi! ilarsh; seen from the left. One-sixth natural size a, acetabular border: *'.«. face for ischium; p, face for pubis. motion or support, and not at all for prehension, although this might have been expected from its small size and position. The elongation of the forearm and manus is a peculiar feature, espe- cially when taken in connection with the ungulate phalanges. It may, perhaps, be explained by supposing that the animal gradually assumed a more erect position until it became essentially a biped, while the fore limbs retained in a measure
. m P;' ~~~' is Fig. 55.—nium of Claosourus aoi! ilarsh; seen from the left. One-sixth natural size a, acetabular border: *'.«. face for ischium; p, face for pubis. motion or support, and not at all for prehension, although this might have been expected from its small size and position. The elongation of the forearm and manus is a peculiar feature, espe- cially when taken in connection with the ungulate phalanges. It may, perhaps, be explained by supposing that the animal gradually assumed a more erect position until it became essentially a biped, while the fore limbs retained in a measure their primitive function, and did not become prehensile as in some allied forms. The pelvis is shown in PI. LXXIII, figs. 2 and 3, and has been fully described by the writer. Its most notable features are seen in the pubis and ischium, the former having a very large expanded pre- pubis, with the postpubis rudimentary, while the shaft of the ischium is greatly elongated. The ilium of the type species is shown in fig. 55. The femur is long, and the shaft nearly straight. The great trochanter is well developed, while the third trochanter is large and near the middle of the shaft, as shown in PI. LXXIII, fig. 2. The external condyle of
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherwashi, bookyear1896
