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. 2017 Aug 23;4(8):170685. doi: 10.1098/rsos.170685

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© 2017 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 1. — Digital endocast of the right inner ear of Lycodon aulicus (SAMA R36823). (a) Main anatomical regions of the inner ear of a squamate reptile (the colubroid snake Lycodon), lateral view to the left, and medial view to the right; (b–j) steps followed while landmarking the specimens; see text for details. Abbreviations: AA, anterior ampulla; ASC, anterior semicircular canal; CC, common crus; FV, fenestra vestibuli (=fenestra ovalis); L, lagena (= cochlea); LA, lateral ampulla; LSC, lateral (= horizontal) semicircular canal; PA, posterior ampulla; PD, perilymphatic duct (part); PSC, posterior semicircular canal; S, sacculus; U, utriculus; VIII₁, anterior branch of the auditory nerve (part); VIII₂, posterior branch of the auditory nerve (part).