Subclass Neopterygii Higher classification Neopterygii | Phylum Chordata Scientific name Semionotiformes Rank Infraclass | |
 | ||
Order †SemionotiformesArambourg and Bertini, 1958 Similar Actinopterygii, Lepidotes, Neopterygii, Semionotus, Bony fishes | ||
Semionotiformes ("flag-back form") is an order of primitive, ray-finned, primarily freshwater fish from the Triassic to the Cretaceous. The best-known genus is Semionotus of Europe and North America.
References
Semionotiformes Wikipedia(Text) CC BY-SA