Fig. (6) Brain diagrams of four different radiations of cartilaginous
fishes, dorsal aspect: A) a holocephalus (Callorhinchus millii); B) a
squalomorph shark (Squalus acanthias) [7]; C) a galeomorph shark
(Carcharinus leucas) [10]; D) and the brain of a myliobatiform ray
(Myliobatis californica). E) Basking shark (Cetorhinus maximus)
[47] brain is presented, as of a large bodied plankton feeder such as
Mobulids. Brains are not to scale. For comparison see Fig. (2A, B)
for M. japanica brain.