Fig. 4

The internal cranial features of NMS G.2021.6.2. The segmented NMS G.2021.6.2 with highlighted endocast (purple) and ceratobranchial bone (pink) seen in, A the dorsal and lateral view. The segmented μCT scan of the endocast infilling and semi-circular canals, along with interpretative illustrations, B in ventral, dorsal, and lateral orientations. The ceratobranchial bones in, C dorsal and lateral orientation. Abbreviations. cbl – cerebellum; cer – cerebrum; lsc – lateral semi-circular canal; nr – cranial nerves; opl – optic lobe; psc – posterior semi-circular canal. Scale bar 10 mm