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

Fig. 5

From: First evidence of Proganochelys quenstedtii (Testudinata) from the Plateosaurus bonebeds (Norian, Late Triassic) of Frick, Canton Aargau, Switzerland

Fig. 5

3D renderings of the braincase of Proganochelys quenstedtii (SMF 09-F2). A, Posterodorsal view; B, Same as A, but rendered transparently with horn core vascularization models rendered opaque; C, Posterior view; D, Same as C, but rendered transparent with horn core vascularization models rendered opaque. Note that dashed lines in A are margins of a weakly defined groove we interpret as the osteological correlate for the course of the stapedial artery. Abbreviations: btb, basis tuberculi basalis; exr, exoccipital ridge; fm, foramen magnum; hc, horn core; occ, occipital condyle; otc, otic capsule; pop, paroccipital condyle; stag, stapedial artery groove; vas, vascularization; X–XI, short canal for the CN X–XI (i.e., foramen jugulare intermedius of Sterli & Joyce, 2007)

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