Belonostomus

Belonostomus (meaning 'big long mouth') or Diphyodus (meaning 'double tooth') is a genus of prehistoric ray-finned fish that was described by Louis Agassiz in 1844. Fossils range from 99.6 million years ago (species unknown) to 66 million years ago (B. longirostris). Belonostomus species include: