In-situ 3D reconstruction from CT data of the bony labyrinth of the left petrosal of Diacodexis ilicis (AMNH VP 16141) in (a) dorsomedial, (b) lateral and (c) ventrolateral views. Scale bar: 1 cm. asc, anterior semicircular canal; cc, common crus; co, cochlear canal; fc, fenestra cochleae; fv, fenestra vestibuli; lsc, lateral semicircular canal; psc, posterior semicircular canal; saf, subarcuate fossa; orientations: A, anterior; D, dorsal; L, lateral; M, medial.