Cladoselache A genus of shark-like fishes, recorded from Europe and N. America, that were 0.5–1.2 m long and are noted for the presence of a large ventral fin. The fishes existed during the Devonian and Carboniferous Periods and numerous specimens have been collected from the Cleveland Shales (Upper Devonian) in N. America.

Cladoselache Late Devonian, shark-like fish recorded from Europe and N. America. Cladoselache ranged between 0.5 and 1.2 m in length and is noted for the presence of a large ventral fin. Numerous specimens of this genus have been collected from the Cleveland Shales, Upper Devonian, in N. America.