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Swiss Journal of Palaeontology
Fig. 12 | Swiss Journal of Palaeontology

Fig. 12

From: Digital skull anatomy of the Oligocene North American tortoise Stylemys nebrascensis with taxonomic comments on the species and comparisons with extant testudinids of the Gopherus–Manouria clade

Fig. 12

3D renderings of the left endosseous labyrinth and stapes of FMNH UC 1501, Stylemys nebrascensis. A Labyrinth and stapes in articulation and posterolateral view. B Labyrinth in lateral view. C Labyrinth in dorsal view. D Labyrinth in posterior view. E Stapes in medial view, with posterior side to left and dorsal side to top of image. F Stapes in posterior view. G Stapes in dorsal view. aam, anterior ampulla; ahyp, anterior hypoglossal nerve endocast; asc, anterior semicircular canal; cc, common crus; cco, central concavity of medial side of stapedial footplate; fov, fenestra ovalis; fpl, fenestra perilymphatica; lab, endosseous labyrinth; lam, lateral ampulla; lsc, lateral semicircular canal; phyp, posterior hypoglossal nerve endocast; psc, posterior semicircular canal; scc, secondary common crus; st, stapes; stfp, stapedial footplate; sts, stapedial shaft; tpm, thickened posterior margin of stapedial footplate

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