Variation, Variability, and the Origin of the Avian Endocranium: Insights from the Anatomy of Alioramus altai (Theropoda: Tyrannosauroidea)
Figure 5
Two horizontal slices through the left cavum metoticum of Alioramus altai (IGM 100/1844).
The slices sample the upper (A) and middle (B) regions of this space. The glossopharyngeal nerve (cn XI) enters the recessus scalae tympani through a foramen that is independent of the medial aperture of the cavum metoticum. Rostral is to the left.