The Causinae are a monotypic subfamily of venomous vipers found only in sub-Saharan Africa. It was created for the genus Causus, a group considered to be among the most primitive members of the family Viperidae based on head scalation, oviparity, venom apparatus, and because they have round pupils. However, this is contradicted by recent molecular...
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http://en.wikipedia.org/wiki/Causinae
Causinae is the 'Night Adders' sub-family of reptiles of the family Viperidae, sub-order Serpentes (Snakes). The sub-family comprises a single genus.
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http://www.probertencyclopaedia.com/browse/BC.HTM
No exact match found.
