A FISH BRAIN FROM THE COAL MEASURES 173 
aa Me ’ 
ee B med? / 
A 
Fig. 13 A Brain cast of the Liassic Pterodactyl, Scaphognathus purdoni, 
seen from the left side. > 1.5. After Newton (’88, pl. 78, fig. 6). cb., cerebrum; 
op.l., optic lobe; cbl., cerebellum; fl., flocculus; b.o., basioccipital. 
Fig. 13 B- Brain cast of same, seen from above and behind. The right side 
is only partly exposed in the fossil. 1.5. After Newton (’88, pl. 78, fig. 7). 
olf., olfactory lobe of brain (including the olfactory tract); cb., cerebrum; op.l., 
optic lobe; fl., floceulus; pi.sc., posterior vertical semicircular canal; cbl., cere- 
bellum; med., medulla oblongata. 
