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Fig. 2 | Swiss Journal of Palaeontology

Fig. 2

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

Fig. 2

Braincase of Proganochelys quenstedtii (SMF 09-F2). A, Braincase during preparation in anterior view. Note that at this stage the prootic foramen for the trigeminal nerve was complete and the shaft of the stapes was still articulated with the braincase close to the fenestra ovalis (the small fragment indicated by the white stippled line and arrow as well as the shaft of the stapes are kept separately with the braincase). B, Braincase after preparation in anterior view. C, In posterior view. D, In left lateral view. Abbreviations: fm, foramen magnum; fov, fenestra ovalis; st, stapes; V, prootic foramen for the trigeminal (CN V) nerve

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