Sites

Trionychidae - English
URL: http://www.embl-heidelberg.de/~uetz/families/Trionychidae.html

Wermuth & Mertens (1977) listed 11 species of the genus Trionyx. Ernst & Barbour (1989) split this group in many separate genera. The older names are still given here.

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Trionychidae - English
URL: http://www.fmnh.helsinki.fi/users/haaramo/Metazoa/Deuterostoma/Chordata/Reptilia

Cladistic tree.

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Trionychidae.html - English
URL: http://www.swissherp.org/Reptiles/Trionychidae/Trionychidae.html

Lots of Pictures of softshell turtles.

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Apalone spinifera (Eastern Spiny Softshell Turtle): Narrative - English
URL: http://animaldiversity.ummz.umich.edu/accounts/apalone/a._spinifera$narrative.ht

Apalone spinifera inhabits various freshwater systems such as rivers, lakes, marshes, farm ponds (Behler and King 1998) as well as bays of the Great Lakes . A. spinifera prefers open habitats with a small amount of vegetation and a sandy or muddy bottom and require sandy raised nesting areas close to water.

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Trionychidae - Spanish
URL: http://www.damisela.com/zoo/rep/tortugas/cripto/triony/taxa.htm

Clasificación de las Tortugas de Carapacho Suave ( Familia Trionychidae ) en el Reino Animal.

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