Extended Data Fig. 4: Sections through the brain of Coccocephalus wildi and Amia calva.
From: Exceptional fossil preservation and evolution of the ray-finned fish brain
a, transverse section through the diencephalon and mesencephalon of Coccocephalus wildi. b, transverse section through the diencephalon and mesencephalon of Amia calva. l.hyp.re, lateral hypothalamic recess. Scale bar = 2 mm.
