Changes

The ''Viperidae'' family is divided into four subfamilies:  

The ''Viperidae'' family is divided into four subfamilies:  

# ''Azemiopinae'' Liem, Marx & Rabb, 1971 (Fea's vipers) with only one species: ''Azemiops feae'' living in [[Myanmar]], southeastern [[Tibet]] across southern [[China]] (Fujien, [[Guangxi]], [[Jiangxi]], [[Kweichow]], [[Sichuan]], [[Yunnan]], [[Zhejiang]]) to northern [[Vietnam]].

*''Azemiopinae'' Liem, Marx & Rabb, 1971 (Fea's vipers) with only one species: ''Azemiops feae'' living in [[Myanmar]], southeastern [[Tibet]] across southern [[China]] (Fujien, [[Guangxi]], [[Jiangxi]], [[Kweichow]], [[Sichuan]], [[Yunnan]], [[Zhejiang]]) to northern [[Vietnam]].

#''Causinae'' Cope, 1859 (night adders) living in Sub-Saharan [[Africa]]

 

#''Crotalinae'' Oppel, 1811 (pit vipers: rattle snakes, bushmaster, cottonmouth, copperhead, jararacas) - In the [[Old World]] from eastern [[Europe]] eastward through [[Asia]] to [[Japan]], [[Taiwan]], [[Indonesia]], peninsular [[India]] and [[Sri Lanka]]. In the [[New World]] from southern [[Canada]] southward through [[Mexico]] and [[Central America]] to southern [[South America]].

*''Causinae'' Cope, 1859 (night adders) living in Sub-Saharan [[Africa]]

#''Viperinae'' Oppel, 1811 (true or pitless vipers) living in [[Europe]], [[Asia]] and [[Africa]].

 

*''Crotalinae'' Oppel, 1811 (pit vipers: rattle snakes, bushmaster, cottonmouth, copperhead, jararacas) - In the [[Old World]] from eastern [[Europe]] eastward through [[Asia]] to [[Japan]], [[Taiwan]], [[Indonesia]], peninsular [[India]] and [[Sri Lanka]]. In the [[New World]] from southern [[Canada]] southward through [[Mexico]] and [[Central America]] to southern [[South America]].

 

*''Viperinae'' Oppel, 1811 (true or pitless vipers) living in [[Europe]], [[Asia]] and [[Africa]].

<references/>

<references/>

[[category:Snakes]]

[[Category:Snakes]]