Figure S2 in A skeleton from the Middle Jurassic of Scotland illuminates an earlier origin of large pterosaurs

Figure S2. Skull and anterior cervical vertebrae of the new Middle Jurassic pterosaur Dearc sgiathanach visualised by X-ray computed microtomography (manual & machine learning segmentation), Related to Figures 1-3. Manually segmented skull in: (a) dorsal; (b) ventral; (c) right lateral; (d) left lateral; (e) anterior; (f) posterior views. Colour code: yellow – palate & pterygoid; purple – dentary; black – teeth; green – fused dorsal cranial elements; blue – basipterygoid; light blue – dorsal unfused cranial bones. Manually segmented atlas, axis & anterior cervical complex in: (g) lateral; (h) ventral; (i) dorsal views. Cervical close up with schematic line art in: (j) dorsal and (k) ventral views. Colour code: dark yellow – 3rd cervical; cream – atlas & axis. Manually segmented brain and inner ear endocast in: (l) anterior; (m) dorsal; (n) ventral; (o) left lateral views. Colour code [annotated in the figure] channels; dark blue – optic lobes; pink – flocculus; purple – cerebrum & cerebellum; light blue – cranial nerves; WEKA trained machine learning segmentation results (p) in dorsal and ventral (left to right, respectively). Line art of select elements (q) cervical vertebral series in dorsal view, abbreviations: cv# - cervical vertebra; cr - cervical ribs; ns - neural spine; NMS G.2021.6.3 counterslab (r) in ventral orientation, abbreviations: lcv - long caudal vertebra; scv - short caudal vertebra; isc - ischium; ppb - prepubis; sv - sacral vertebra (?); gas - gastralia; sac - sacrum; dv - dorsal vertebra; rib - dorsal ribs; hum - humerus; sc - scapula coracoid; and dorsal view of right humerus (s); abbreviations: hum - humerus; ra - radius; ul - ulna. Comparative size diagram of select non-pterodactyloid humeri (t) [annotated in image]. Scales bars=20 m