(Serpentes: Viperidae) - compiled by Van Wallach
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Head drawings: genus
Sistrurus(Serpentes: Viperidae) - compiled by Van Wallach
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 | Sistrurus catenatus (from Cope 1900) |
 | Sistrurus catenatus (from Davis & al. 2021) |
 | Sistrurus catenatus (from Holbrook 1842) |
 | Sistrurus catenatus (from Illinois Natural History Survey) |
 | Sistrurus catenatus (from Phisalix 1922) |
 | Sistrurus catenatus (from Schmidt & Davis 1941) |
 | Sistrurus catenatus (from Cope 1900) |
 | Sistrurus catenatus (from Cope 1900) |
 | Sistrurus catenatus (from Klauber 1956) |
 | Sistrurus catenatus (from Powell & al. 2019) |
 | Sistrurus catenatus (from Stejneger 1895) |
 | Sistrurus catenatus (from Surface 1906) |
 | Sistrurus catenatus (from Klauber 1956) |
 | Sistrurus catenatus (from Powell & al. 2019) |
 | Sistrurus catenatus (from Stejneger 1895) |
 | Sistrurus catenatus (from Surface 1906) |
 | Sistrurus miliarius (from Cope 1900) |
 | Sistrurus miliarius (from Holbrook 1842) |
 | Sistrurus miliarius (from Klauber 1956) |
 | Sistrurus miliarius (from Palmer & Braswell 1995) |
 | Sistrurus miliarius (from Powell & al. 2019) |
 | Sistrurus miliarius (from Guyer & al. 2018) |
 | Sistrurus miliarius (from Guyer & al. 2018) |
 | Sistrurus miliarius (from Stejneger 1895) |
 | Sistrurus miliarius (from Stejneger 1895) |