Figure 8 in Jurassic mammaliaform petrosals from Western Siberia (Russia) and implications for early mammalian inner-ear anatomy

Figure 8. Dorsal view of the reconstructed inner ear endocasts of the Berezovsk petrosals. A,?docodontan petrosal PIN 5087/71. B,?docodontan petrosal PIN 5087/38; C,?haramiyidan petrosal PIN 5087/37; D,?haramiyidan petrosal PIN 5087/69; E,?haramiyidan petrosal PIN 5087/70. Anterior to the top, scalebars equal 1 mm. See also Supporting Information, available from digital data repository Dryad (https://doi.org/10.5061/dryad.t1g1jwt2d). Abbreviations: aasc, ampulla of the anterior semicircular canal; alsc, ampulla of the lateral semicircular canal; apsc, ampulla of the posterior semicircular canal; asc, anterior semicircular canal; bpa CN VIII, branch for posterior ampulla of CN VIII; cc, crus commune; cp CN VIII, cochlear part of CN VIII; ed, endolymphatic duct; fn CN VII, facial nerve; icca, inflated cochlear canal apex; lsc, lateral semicircular canal; psc, posterior semicircular canal; sb CN VIII, saccular branch of CN VIII; scc, secondary crus commune; vp CN VIII, vestibular (utriculo-ampullar) part of CN VIII.