What is "aspidorhynchiformes"

Aspidorhynchiformes (meaning "shield snout form") is an extinct order of prehistoric ray-finned fish that was described by Bleeker in 1859.

Aspidorhynchiformes has one family, which is divided into at least two genera:

:*Aspidorhynchidae

::* Aspidorhynchus

::* Belonostomus

Fossils range have been found in the United States, France, Italy, Russia, Saskatchewan, Alberta, North Dakota, Montana, Wyoming, and Uzbekistan. These fossils range from 167.7 mya ( Aspidorhynchus) to 66 mya ( Belonostomus longirostris).

Vinctifer is presumably closely related, but has several differences from the other two; though it is likely a member of the Aspidorhynchiformes, it might be treated as distinct from the Aspidorhynchidae.