Eoeugnathus is an extinct genus of prehistoric ray-finned fish belonging to the Halecomorphi. Eoeugnathus existed during the Middle Triassic in what is now Italy, Spain, and Switzerland. The type species is Eoeugnathus megalepis (monotypy). See also Prehistoric fish List of prehistoric bony fish References Halecomorphi Triassic bony fish Prehistoric ray-finned fish genera Triassic fish of Europe