Holosteans and Teleosts

Abstract

The present chapter is devoted to the central nervous system of holostean and teleostean fishes. Holostean species are restricted to only two genera, i.e. Lepisosteus (the gars), with seven species, and Amia, with a single species, i.e. Amia calva, the bowfin. These are extants of a once abundant group of bony fishes that was largely replaced in the late Mesozoic and Cenozoic era by the expanding and now dominating Teleostei.