Chimaeras are cartilaginous fish in the order Chimaeriformes, known informally as ghost sharks, rat fish, spookfish, or rabbit fish; the last two names are also applied, respectively, to the ray-finne

Myriacanthus is an extinct genus of cartilaginous fish belonging to the order Chimaeriformes. The only named species, Myriacanthus paradoxus, is known from the Early Jurassic of England, France, Belgi