Schemes including Chelydra serpentina

• IUCN Red List of Threatened Species. Version 2012.1 Chelydra serpentina
• The Reptile Database (Chelydra_serpentina) Chelydra serpentina
• IUCN Red List of Threatened Species. Version 2012.2 (163424) Chelydra serpentina
• Norma 059, 2010 Chelydra serpentina
• NatureServe Explorer: An online encyclopedia of life. Version 7.1 (ELEMENT_GLOBAL.2.103761) Chelydra serpentina
• CONABIO (15896REPTIB501112) Chelydra serpentina
• GBIF (2441905) Chelydra serpentina