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Phrynops hilarii
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Testudines
Suborder: Pleurodira
Family: Chelidae
Subfamily: Chelinae
Genus: Phrynops
Wagler, 1830[1]

Sometimes called the bearded toadheads but better known by their scientific name of Phrynops this genus of turtles has often been a bit of a dumping ground for the short-necked South American turtles of the family Chelidae.

The genus is widely distributed in South America found in the Orinoco to Amazon and São Francisco to Paraná and adjacent river basins of Colombia, Venezuela, the Guianas, Brazil, Paraguay, Uruguay and northeastern Argentina (Iverson, 1992).[4]


Listed alphabetically.[5]

  • Phrynops geoffroanus (Schweigger, 1812) – Geoffroy’s Toadhead Turtle or Geoffroy’s Side-necked Turtle[6]
  • Phrynops hilarii (Duméril and Bibron 1835) – Hilaire’s Toadhead Turtle or Hilaire’s Side-necked Turtle[7]
  • Phrynops tuberosus (Peters, 1870) – Cotinga River Toadhead Turtle[8]
  • Phrynops williamsi Rhodin & Mittermaier, 1983 – William’s Toadhead Turtle, William’s South-American Side-necked Turtle[9]


  1. ^ a b Wagier, J. 1830. Natürliches System der Amphibien, mit vorangehender Classification der Säugthiere und Vögel. Stuttgart und Tübingen, München: J. G. Cotta. vi + 354 pp., 9 pis.
  2. ^ G ray, J.E. 1872b. On Spatulemys lasalae, a new genus of Hydraspidae from Rio Parana, Corrientes. Annals and Magazine of Natural History (4)10:463.
  3. ^ 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.
  4. ^ lverson, J.B. 1992. Revised Checklist with Distribution Maps of the Turtles of the World. Privately Printed, Richmond, Indiana. 363p.
  5. ^ Phyrnops, The Reptile Database
  6. ^ Schweigger, Augustus F. 1812. Prodromus monographiae Cheloniorum. Königsberger Archiv für Naturwissenschaft und Mathematik 1:271–368, 406–462.
  7. ^ Duméril, André Marie Constant and Bibron, Gabriel. 1835. Erpétologie Générale ou Histoire Naturelle Complète des Reptiles. Tome Second. Paris: Roret, 680 pp.
  8. ^ Peters, Wilhem Carl Hartwig 1870. Über Platemys tuberosa, eine neue Art von Schildkröte aus British-Guiana. Monatsber. königl. Akad. Wiss. Berlin. 1870 (Mai): 311-313
  9. ^ Rhodin, Anders G.J. and Mittermeier, Russell A. 1983. Description of Phrynops williamsi, a new species of chelid turtle of the South American P. geoffroanus complex. In: Rhodin, A.G.J. and Miyata, K. (Eds.). Advances in Herpetology and Evolutionary Biology. Essays in Honor of Ernest E. Williams. Cambridge, MA: Museum of Comparative Zoology, pp. 58–73.