''Ornithoprion'' is an

extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

genus of eugeneodont

holocephalan Holocephali ("complete heads"), sometimes given the term Euchondrocephali, is a subclass of cartilaginous fish in the class Chondrichthyes. The earliest fossils are of teeth and come from the Devonian period. Little is known about these primit ...

closely related to '' Caseodus.'' It lived in the Moscovian stage of the

Carboniferous The Carboniferous ( ) is a geologic period and system of the Paleozoic that spans 60 million years from the end of the Devonian Period million years ago ( Mya), to the beginning of the Permian Period, million years ago. The name ''Carbonifero ...

from 315.2 to 307 million years ago. Various species had an elongated lower jaw. The discovery and description of ''Ornithoprion'' helped establish many aspects of eugeneodont skull anatomy, which previously could only be gleaned from tooth data.

References

Carboniferous fish of North America Carboniferous cartilaginous fish Prehistoric cartilaginous fish genera {{Paleo-cartilaginous-fish-stub