sentences:  They created the new genus "Centroscymnus" for this shark, and gave it the specific epithet "coelolepis", derived from the Greek "" ("hollow") and "lepis" ("fish scale") and referring to the structure of the dermal denticles.The type specimen, caught off Portugal, has since been destroyed in a fire.One of the widest-ranging deepwater sharks, the Portuguese dogfish is patchily distributed around the world.