IUCN Red List assessments

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IUCN Red Lists of the family Viperidae

Taxonomy and distribution of the genus Sistrurus

Bibliography of the genus Sistrurus

Genus Sistrurus Pygmy Rattlesnakes IUCN Red List assessments: Extinct (in recent times): 0 species Extinct in the Wild: 0 species = 0.0 % Critically Endangered: 0 species = 0.0 % Endangered: 0 species = 0.0 % Vulnerable: 0 species = 0.0 % Near Threatened: 0 species = 0.0 % Least Concern: 2 species = 66.7 % Data Deficient: 0 species = 0.0 % Not Assessed: 1 species = 33.3 %