Actinopteri - Semionotiformes - Semionotidae

Full reference: B. Schaeffer and D. H. Dunkle. 1950. A semionotid fish from the Chinle Formation, with consideration of its relationships. American Museum Novitates 1457:1-29

Belongs to Semionotus according to B. Schaeffer and D. H. Dunkle 1950

Sister taxa: Semionotus australis, Semionotus bergeri, Semionotus capensis, Semionotus formosus, Semionotus kapffi, Semionotus normanniae, Semionotus tenuis

Type specimen: A.M.N.H. No. 8870, a skeleton (complete fish with uncrushed skull). Its type locality is Kanab Canyon, which is in a Norian fluvial-lacustrine sandstone in the Chinle Formation of Utah.

Ecology: nektonic carnivore