1. Aguilera, O.A. 2004. Tesoros Paleontolögicos de Venezuela. Urumaco Patrimonio Natural de la Humanidad. — 148 p., Caracas (Editorial Arte).
2. Alvarenga, H.M.F. &Guilherme, E. 2003. The anhingas (Aves: Anhingidae) from the Upper Tertiary (Miocene-Pliocene) of southwestern Amazonia. — Journal of Vertebrate Paleontology23: 614–621.
3. Alvarenga, H.M.F. &Höfling, E. 2003. Systematic revision of the Phorusrhacidae (Aves, Ralliformes). — Papéis Avulsos de Zoologia43: 55–91.
4. Baumel, J.J. &Witmer, L.M. 1993. Osteologia. — In:Baumel, J.J.;King, A.S.;Breazile, J.E.;Evans, H.E. &Vanden Berge, J. C, eds., Handbook of Avian Anatomy: Nomina Anatomica Avium: 45–132, Cambridge MA (Publications of the Nuttall Ornithological Club).
5. Becker, J.J. 1987. Neogene avian localities of North America. — 171 p., Washington DC (Smithsonian Institution Press).