Traits taxon details
original description
Rhodin, A.G.J.; Mittermeier, R.A. (1983). Description of Phrynops williamsi, a new species of chelid turtle of the South American complex. In Rhodin & Miyata (eds.): Advances in Herpetology and Evolutionary Biology. Cambridge, Mus. Comp. Zool. pp. 58-73. [details]
basis of record
Uetz, P., Freed, P. & Jirí Hošek (eds.). (2021). The Reptile Database. , available online at http://reptile-database.reptarium.cz [details]
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