. Geological magazine. Pelvis of Ceratosaurus nasicornis, Marsh ; side view, seen from the Pelvis of Allosaurus fragilis, Marsh ; the same view, a, acetabulum ;il, ilium ; is, ischium; p, pubis., Both figures are one-twelfth natiiral size. 260 Piof. 0. C. Marsh^JVew Jurassic Dinosaurs. aid in keeping the body balanced. Possibly this position wasassumed habitually by these ferocious biped reptiles, in lying in waitfor prey. The Hind Limbs.—Several restorations of the posterior limb ofMegalosaurus have been attempted, but the imperfect material athand was not sufficient to ensure e
. Geological magazine. Pelvis of Ceratosaurus nasicornis, Marsh ; side view, seen from the Pelvis of Allosaurus fragilis, Marsh ; the same view, a, acetabulum ;il, ilium ; is, ischium; p, pubis., Both figures are one-twelfth natiiral size. 260 Piof. 0. C. Marsh^JVew Jurassic Dinosaurs. aid in keeping the body balanced. Possibly this position wasassumed habitually by these ferocious biped reptiles, in lying in waitfor prey. The Hind Limbs.—Several restorations of the posterior limb ofMegalosaurus have been attempted, but the imperfect material athand was not sufficient to ensure entire success. In the restorationof Allosaurus, given in Fig. 7, only the bones found together havebeen placed in position. The relative proportions of the femur andtibia are shown in this figure, and the general structure of the astragalus and calcaneum are distinct from the tibia and fibula,as in all the known Theropoda, although their coalescence has beenregarded as certain in some of the genera. In the foot of Allosaurus fragilis, represented in Fig. 7, no tarsalbones of the second ro
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