English: Volume-rendered CT images of the braincase of the sauropod dinosaur Spinophorosaurus nigerensis (GCP-CV-4229) from the Jurassic of Aderbissinat, Niger; opaque and unfilled in right lateral (A), caudal (B), dorsal (C), and ventral (D) views and semi-transparent with the endocast and associated structures in oblique view (E).

Abbreviations in subfigure E and Figure 4: CAR, carotid artery; CBL, cerebellum; CE, cerebrum; CVCM, dorsal-head/caudal-middle-cerebral vein system; DE, dural expansion; IX, glossopharyngeal nerve; IX–XI, glossopharyngeal and vagoaccessory nerves; jug, jugular vein; LAB, labyrinth; MO, medulla oblongata; OB: olfactory bulb; OT, olfactory tract; pd, perilymphatic duct; PFO, pituitary fossa; RVCM, rostral middle cerebral vein; SIN, blind dural venous sinus of hindbrain; V, trigeminal nerve; VI, abducens nerve; VII, facial nerve; X–XI, vagoaccessory nerve; XII, hypoglossal nerve.

https://doi.org/10.1371/journal.pone.0030060.g003