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Swiss Journal of Palaeontology
Fig. 1 | Swiss Journal of Palaeontology

Fig. 1

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. 1

The shell of USNM 97, holotype of Stylemys nebrascensis. A, B Illustrations of the holotype as printed by Leidy (1853: plate IX, figs. 1–2). C Illustration of the holotype as printed by Leidy (1952: plate XII A, Fig. 2; note the specimen was originally printed as a mirrored image, which we reverted here). D–E Recent photographs of the holotype in its current state within the collection of the USNM. A dorsal view. B ventral view. C Left lateral view. D Dorsal view. E Ventral view. A–C Are in the public domain, and D–E were made available to the authors by Evangelos Vlachos

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