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Swiss Journal of Palaeontology
Fig. 15 | Swiss Journal of Palaeontology

Fig. 15

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. 15

3D renderings of the left mandibular rami of Gopherus polyphemus and Manouria impressa. A–D Gopherus polyphemus (FMNH 211815). A Dorsal view. B Lateral view. C Close-up of articulation area. D Medial view. E–H Manouria impressa (SMF 69777). E Dorsal view. F Lateral view. G Close-up of articulation area. H Medial view. Note that bones are labelled in bold font, and traits in regular font. an, angular; arn, articular notch; art, articular; avcp, anteroventral coronoid process; cor, coronoid; den, dentary; fai, foramen alveolare inferius; fat, foramen auriculotemporalis; fct, foramen chorda tympani; fdfm, foramen dentofaciale majus; fim, foramen intermandibulare medius; fM, foramen into fossa Meckelii; labr, labial ridge; linr, lingual ridge; paf, prearticular foramen; pcp, posteromedial coronoid process; pctf, posterior chorda tympani foramen; pimf, posterior intermandibular foramen; pre, prearticular; rap, retroarticular process; secf, surangular ectocondylar flange; ser, serrations; sM, sulcus Meckelii; sur, surangular; syg, symphyseal groove

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