is also very large. Subsequently, the bony arches surrounding and separating these openings (e.g. the suborbital arch, postorbital bar) are proportionately slender and thin. The parietal foramen ("third eye" opening) on top of the skull is large and surrounded by a raised boss of bone, and is positioned at the very back of the skull right above the occiput. The occiput itself (the back face of the skull) is tall and roughly rectangular in shape, slightly concave and only gently sloping. As in other gorgonopsians, "D." nasuta has large blade-like caniniform teeth. The incisor teeth (five in each premaxilla), however, are smaller than those of related gorgonopsians, and it only had four to five small postcanine teeth. The jawline of the maxilla in the upper jaw is notably convex, with a much more exaggerated curve of the toothrow than in other gorgonopsians except for Arctognathus. This exaggerated curvature is due to the post-canine teeth being housed in a raised bony flange of the maxilla behind the canines. The maxilla also has an unusual groove over the postcanine teeth, starting shallowly above the first postcanine and running down to the edge of the bone behind the 5th postcanine, deepening along its length. Like other gorgonopsians "D." nasuta also possessed palatal teeth, three on each palatine and two on each pterygoid bones, with only weakly developed bosses supporting them. The vomer on the roof of the mouth is very broad at the front, but narrows rapidly to a constricted splint halfway down its length. This more resembles the vomer of the derived rubidgeines than the narrower vomer of earlier gorgonopsians. The vomer sports three ridges, one down its middle and two running along each edge. The dentary bone of the lower jaw is comparatively slender, with a sloping mandibular symphysis that nonetheless bears the characteristic 'chin' of gorgonopsians. The reflected lamina of the angular bone towards the back of the jaw is only moderately ridged, in comparison to other gorgonopsians. History "Dixeya" nasuta was originally named by German paleontologist Friedrich von Huene in 1950 from two skulls collected from the Usili Formation (formerly known as K6 or the Kawinga Formation) in the Ruhuhu Basin of Tanzania; GPIT/RE/7118 (designated the holotype specimen) and GPIT/RE/7119. Von Huene had erected these specimens as second species of Dixeya, a genus coined in 1927 by Sidney H. Haughton for its type species D. quadrata. In 1970, paleontologist