Editing Carcharodontosaurus (section)

==== Brain and inner ear ====
{{multiple image
| align             = right
| direction         = vertical
| image1            = Carcharodontosaurus braincase.jpg
| image2            = Endocasts of Carcharodontosaurus.jpg
| footer            = Braincase of the neotype (above), with [[endocast]]s of same (A–D) and MB. R. 2056 (E–F) below
| alt1              = Braincase of the C. saharicus neotype
| alt2              = Endocast of the lost Tameryraptor skull.
| total_width       = 170
}}

In 2001, Hans C. E. Larsson published a description of the [[inner ear]] and [[endocranium]] of ''Carcharodontosaurus saharicus''. Starting from the portion of the brain closest to the tip of the animal's snout is the forebrain, which is followed by the midbrain. The [[cephalic flexure|midbrain]] is angled downwards at a 45-degree angle and towards the rear of the animal. This is followed by the [[hindbrain]], which is roughly parallel to the [[forebrain]] and forms a roughly 40-degree [[pontine flexure|angle]] with the midbrain. Overall, the brain of ''C. saharicus'' would have been similar to that of a related dinosaur, ''[[Allosaurus fragilis]].'' Larsson found that the ratio of the [[cerebrum]] to the volume of the brain overall in ''Carcharodontosaurus'' was typical for a non-avian reptile. ''Carcharodontosaurus'' also had a large [[optic nerve]].<ref name="csaharicus-endo">{{cite book | last1 = Larsson | first1 = H.C.E. | date = 2001 | chapter = Endocranial anatomy of ''Carcharodontosaurus saharicus'' (Theropoda: Allosauroidea) and its implications for theropod brain evolution | title = Mesozoic Vertebrate Life | editor-first1 = D.H. | editor-last1 = Tanke | editor-last2 = Carpenter | editor-first2 = K. | editor-last3 = Skrepnick | editor-first3 = M. W. | publisher = Indiana University Press | pages = 219–236|isbn=978-0-253-33907-2|chapter-url=https://archive.org/details/mesozoicvertebra0000unse/page/19/mode/1up|url=https://archive.org/details/mesozoicvertebra0000unse/page/n3/mode/1up|url-access=registration}}</ref>

The three [[semicircular canals]] of the inner ear of ''Carcharodontosaurus saharicus''—when viewed from the side—had a subtriangular outline. This subtriangular inner-ear configuration is present in ''[[Allosaurus]]'', [[lizard]]s, and [[turtle]]s, but not in [[bird]]s. The semi-"circular" canals themselves were very linear, which explains the pointed silhouette. In life, the [[floccular lobe]] of the brain would have projected into the area surrounded by the semicircular canals, just like in other non-avian theropods, birds, and pterosaurs.<ref name="csaharicus-endo" />