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

Fig. 4

From: Ontogenetic variation in the cranium of Mixosaurus cornalianus, with implications for the evolution of ichthyosaurian cranial development

Fig. 4

Mixosaurus cornalianus, supraoccipitals in anterior (A) and posterior (B) view; stapes (C, D) and exoccipitals (E–H) in posterior view and Stenopterygius quadriscissus exoccipital in anterior view (I). Interpretative drawings are identified by an apostrophe beside the corresponding letter. A Juvenile specimen PIMUZ T 2416; B adult specimen MSNM BES SC 1001; C juvenile specimen PIMUZ T 0077; D stapes in posterior view of adult specimen PIMUZ T 2414; E fetal specimen PIMUZ T 4830; F juvenile specimen PIMUZ T 4857; G juvenile specimen PIMUZ T 2416; H adult specimen PIMUZ T 2414; I exoccipital in anterior view of a stage 3 fetus Stenopterygius quadriscissus SMNS 80234. amf bof anteromedial footplate of the basioccipital facet, bof basioccipital facet, cbli indentation for the cerebellum, fm foramen magnum, hyf hypoglossal foramen, nuf nutritive foramen, plf bof posterolateral footplate of the basioccipital facet, quf quadrate facet, sof supraoccipital facet, ssc semicircular canal indentation. Scale bar equals 3 mm

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