 Carnosaurs, megalosauroids, coelurosaurs, and most other ceratosaurians (including noasaurines) all have vertebrae which have front faces ranging from very weakly concave to flat (platycoelous) or convex (opisthocoelous).Another notable feature of elaphrosaurine cervical vertebrae is that their cervical ribs are completely fused to the centrum (main body) of their corresponding vertebrae.Elaphrosaurines also have several diagnostic hip features.