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Swiss Journal of Palaeontology
Fig. 5 | Swiss Journal of Palaeontology

Fig. 5

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. 5

3D renderings of the cranium of FMNH UC 1501, referred to Stylemys nebrascensis. A Dorsal view. B Ventral view. C Left lateral view. D Right lateral view. E Anterior view. F Posterior view. Note that bones are labelled in bold font, and traits in regular font. acc, accessory ridge; apo, antrum postoticum; boc, basioccipital; bt, basioccipital tubercle; ct, cavum tympani; ep, epipterygoid; ex, exoccipital; f, frontal; fon, foramen orbito-nasale; fov, fenestra ovalis; fnt, foramen nervi trigemini; fpcci, foramen posterius canalis carotici interni; fpo, fenestra postotica; fpp, foramen palatinum posterius; fprp, foramen praepalatinum; fst, foramen stapedio-temporale; ica, incisura columellae auris; j, jugal; labr, labial ridge; linr, lingual ridge; mapl, medial articular process lip; mpr, medial premaxillary ridge; mx, maxilla; occ, occipital condyle; op, opisthotic; par, parietal; pal, palatine; pbs, parabasisphenoid; pm, premaxilla; po, postorbital; ppe, processus pterygoideus externus; prf, prefrontal; pro, prootic; pt, pterygoid; pto, processus trochlearis oticum; q, quadrate; qas, quadrate articulation surface; qll, quadrate lateral lamina; qj, quadratojugal; soc, supraoccipital; stg, stapedial groove; rst, recessus scalae tympani; v, vomer; vk, vomer keel

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