Stage 15
Olfactory bulb has grown longer than in previous stage. Optic tectum and cerebellum are less distinct.
Jugal, parietal, postorbital, maxilla and premaxilla and palatine: continue to increase surface area. Certain bones begin fusing.
Supratemporal: A curved bone that allows articulation for the quadrate. Connect to the parietal ventral laterally and starts out as a curved sliver here.