Fig. 7

Interpretative drawings of brain, osseus labyrinth and nasobasal canal endocasts of †Saurichthys sp. (NHMD_157546_A); a left lateral view; b dorsal view; c ventral view; d left lateral closeup of bony labyrinth and intramural diverticula; e closeup of dorsal view of bony labyrinth and intramural diverticula. Dashed gray line indicates cryptic oticooccipital fissure. Abbreviations: I, olfactory nerve; II, optic nerve; III, oculomotor nerve; IV, trochlear nerve; V, trigeminal nerve; VI, abducens nerve; VII; facial nerve; IX, glossopharyngeal nerve; X, vagus nerve; aamp, ampulla of anterior semicircular canal; acv, anterior cerebral vein; asc, anterior semicircular canal; aur, cerebellar auricle; bb, bony bar (dorsum sellae); bhc, buccohypophyseal canal; cc, crus communis; hamp, ampulla of horizontal semicircular canal; hsc, horizontal semicircular canal; id, intramural diverticulum; lcc, lateral cranial canal; mcv, mid-cerebral vein; n?, putative dorsal ramus of IX or X; nbc, nasobasal canal; nocc; spinooccipital nerve; nocc/aocc; spinooccipital nerve or occipital artery; pamp, ampulla of posterior semicircular canal; prof?, putative course of profundus nerve; psc, posterior semicircular canal; sac, saccular recess; tel, telencephalon; to, optic tectum; utr, utricular recess; vl, vagal lobe. Scale bars equal 1 cm