G Pelvic girdle
The pelvic girdle is composed of three bones--the ilium (il), ischium (is) and pubis (pu). These bones surround the hip socket (acet), where the hind limb attaches. Sarcosuchus had a very heavy body, and the limbs were sprawled out to each side of the pelvic girdle. It would have dragged itself over the ground, although it was probably capable of lunging with incredible speed. Sarcosuchus would have been more at home in the water, where it could swim with grace.