 Epipophyses are bony projections located above the postzygapophyses (joints on the rear edge of a vertebra connecting to the front edge of the following vertebra).Elaphrosaurines, on the other hand, have cervical epipophyses which are much more diminished or even absent in the case of "Elaphrosaurus".Many noasaurids are only known from vertebrae, including both valid ("Laevisuchus", "Spinostropheus") and dubious ("Composuchus, Jubbulpuria, Ornithomimoides, Coeluroides") genera.