Acanthonemus

Acanthonemus (from ἄκανθα akantha, 'spine' and νεμω nemo 'to distribute' or 'covered') is an extinct genus of prehistoric marine ray-finned fish that lived from the early Eocene. It contains a single species, A. subaureus (synonyms: A. bertrandi Agassiz, 1834, A. filamentosus Agassiz, 1834 ), known from the famous Monte Bolca site in Italy. It is the only genus in the extinct family Acanthonemidae.