Phrynops geoffroanus tuberculosa Miyata, 1982 (ex errore)
The Cotinga River Toadhead Turtle (Phrynops tubersosus) is a large species from South America. In the past it has been seen as a subspecies of Phrynops geoffroanus but it is currently afforded full species status.
^Peter Paul van Dijk, John B. Iverson, H. Bradley Shaffer, Roger Bour, and Anders G.J. Rhodin. 2012. Turtles of the World, 2012 Update: Annotated Checklist of Taxonomy, Synonymy, Distribution, and Conservation Status. Chelonian Research Monographs No. 5, pp. 000.243–000.328.