Phrynops williamsi

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Phrynops williamsi
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Testudines
Family: Chelidae
Subfamily: Chelinae
Genus: Phrynops
Species: P. williamsi
Binomial name
Phrynops williamsi
Rhodin & Mittermaier, 1983[1]
  • Phrynops williamsi Rhodin & Mittermeier, 1983

Phrynops williamsi (known as William's toadhead turtle or William's South American side-necked turtle) is a species of turtle found in southeast Brazil, Uruguay, and Argentina.[4]


  1. ^ 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.
  2. ^ Fritz Uwe; Peter Havaš (2007). "Checklist of Chelonians of the World". Vertebrate Zoology 57 (2): 341–342. ISSN 18640-5755. Archived from the original (PDF) on 2010-12-17. Retrieved 29 May 2012. 
  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. ^ Phrynops williamsi, The Reptile Database

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