the ilium is generally typical for early dinosaurs, with a perforated acetabulum, conspicuous antitrochanter, and a postacetabular process which was much longer than the preacetabular process. the ischiadic peduncle is expanded in a front-to-back direction like that of neotheropods. there is an l-shaped scar on the inner edge of the iliac blade which received the first sacral vertebra, and there was enough room for two more sacrals behind it. the outer surface of postacetabular process has two holes and a pronounced incision along its lower edge, known as a brevis fossa. in most dinosaurs which have a brevis fossa, it clearly starts at the base of the postacetabular process, according to a ridge which delineates its upper edge. however, "nhandumirim"'s brevis fossa only occupies the rear 3/4ths of the postacetabular process, with no clear interaction with the main portion of the ilium.