Preliminary notes on South American Nematognathi. I Eigenmann, C. H. Eigenmann, Rosa Smith Proceedings of the California Academy of Sciences, Series 2 1888 1 2 119 172 urn:lsid:zoobank.org:act:23E201FEF3B843988CAFB4F67BE59BAB Actinopterygii Auchenipteridae Ageneiosus CoL Animalia Siluriformes Chordata species atronasus  This treatment is a stub. You can help Plazi making the full treatment available.