The rear of the nasal bone is clipped by front extensions of the frontal bone, the topmost of which is elevated relative to the skull roof. The ascending branches of the praemaxillae have internal processes pointing to behind, below and slightly inside, dividing a shared chamber at the midline. The prefrontal possesses a flange, continuing from the lower part of the lacrimal bone to the lower part of the ascending process of the prefrontal, and connecting to a process on the side of the praemaxilla to form an elevation on the side of the crest base.
The back of the nasal bone is clipped by front extensions of the frontal bone, with the topmost extension elevated above the skull roof. The ascending branches of the praemaxillae have internal processes that point behind, below and slightly inside, dividing a shared chamber at the midline. The prefrontal has a flange extending from the lower part of the lacrimal bone to the lower part of the ascending process of the prefrontal, connecting to a process on the side of the praemaxilla to form an elevation on the side of the crest base.