Head drawings: genus Heterodon(Serpentes: Colubridae) - compiled by Van Wallach Home

Heterodon kennerlyi (from Lemos-Espinal & al. 2015)
Heterodon kennerlyi (from Powell & al. 2019)
Heterodon nasicus (from Breckenridge 1944)
Heterodon nasicus (from Cope 1900)
Heterodon nasicus (from Powell & al. 1998)
Heterodon nasicus (from Stebbins 1954)
Heterodon nasicus (from Powell & al. 2019)
Heterodon nasicus (from Powell & al. 2019)
Heterodon nasicus (from Schmidt & Davis 1941)
Heterodon nasicus (from Schmidt & Davis 1941)
Heterodon platirhinos (from Breckenridge 1944)
Heterodon platirhinos (from Davis & al. 2021)
Heterodon platirhinos (from Holbrook 1842)
Heterodon platirhinos (from Holbrook 1842)
Heterodon platirhinos (from Schmidt & Davis 1941)
Heterodon platirhinos (from Surface 1906)
Heterodon platirhinos (from Schmidt & Davis 1941)
Heterodon platirhinos (from Surface 1906)
Heterodon platirhinos (by Amelia Hansen)
Heterodon platirhinos (from Stebbins 1954)
Heterodon platirhinos (from Palmer & Braswell 1995)
Heterodon platirhinos (from Palmer & Braswell 1995)
Heterodon platirhinos (from Palmer & Braswell 1995)
Heterodon platirhinos (from Cope 1900)
Heterodon platirhinos (from Cope 1900)
Heterodon simus (from Cope 1900)
Heterodon simus (from Palmer & Braswell 1995)
Heterodon simus (from Palmer & Braswell 1995)
Heterodon simus (from Palmer & Braswell 1995)
Heterodon simus (from Schmidt & Davis 1941)