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Swiss Journal of Palaeontology
Fig. 4 | Swiss Journal of Palaeontology

Fig. 4

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. 4

Photographs of the fossil FMNH UC 1501, referred to Stylemys nebrascensis. A Dorsal view. B Left lateral view. C Ventral view. Note that sediment covers large parts of the palate, that the mandible is articulated to the cranium, and that some sediment areas are approximate infills of original morphology (left cheek, supraoccipital crest), and it is not entirely clear if these were modelled using a mixture of plaster and sediment, or if they represent sediment pseudomorphs of the original morphology. Abbreviations: ?pseu, possible sediment pseudomorphs; apo, antrum postoticum; cem, cheek emargination; ct, cavum tympani; man, mandible; or, orbit; tem, temporal emargination

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