Deltadromeus may actually be a junior synonym of the ceratosaur Bahariasaurus, but since there are no known skulls for either animal, this synonymy can neither be confirmed or disproved at this point. In addition, the placement of Deltadromeus has alternately been as a noasaurid ceratosaur, a neovenatorid allosauroid, or a megaraptoran tyrannosauroid, all conclusions being recent and none being definitive.