Actinopteri - Semionotiformes - Semionotidae

Alternative combination: Promecosomina formosa

Belongs to Semionotus according to Woodward 1908

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

Ecology: nektonic carnivore