FIG. 6. — Ragechelus sahelica n. gen., n in The oldest erymnochelyine turtle skull, Ragechelus sahelica n. gen., n. sp., from the Iullemmeden basin, Upper Cretaceous of Africa, and the associated fauna in its geographical and geological context

FIG. 6. — Ragechelus sahelica n. gen., n. sp., Indamane, southwestern Niger, late Maastrichtian. Lateral view of the skull, holotype MNHN-RA-2018.0031. Abbreviations: an sq, antrum squamosum; co, condylus occipitalis; com q, commissura quadrati; fpp; foramen palatinum posterius; fr, frontal; ica+Et, incisura columellae auris with the Eustachian tube; ju, jugal; l pfr, left prefrontal; mq, meatus quadrati; mx, maxilla; na, external nare; pal, palatine; pfr, prefrontal; pmx, premaxilla; paq, processus articularis quadrati; pmx, premaxilla; po, postorbital; ppo, processus paroccipitalis opisthotici; pro, prootic; pter, pterygoid; ptp, processus trochlearis pterygoideus; q, quadrate; r paq, right processus articularis quadrati; r pter, right pterygoid; soc, supraoccipital; sq, squamosal; V, foramen trigemini; black arrow, position of the foramen stapediotemporale; blue and green dotted lines, hypothetic positions for the skull lateral notch border; red line, border of the palatal medial crest. Scale bar: 4 cm.