1) Tetrapod subfamily
Found on
https://www.crosswordclues.com/clue/viperinae
The Viperinae, or viperines, are a subfamily of venomous vipers endemic to Europe, Asia and Africa. They are distinguished by their lack of the heat-sensing pit organs that characterize their sister group, the subfamily Crotalinae. Currently, 12 genera and 66 species are recognized. Most are tropical and subtropical, although one species, Vipera b...
Found on
http://en.wikipedia.org/wiki/Viperinae
Viperinae is the 'True Vipers' sub-family of reptiles of the family Viperidae, sub-order Serpentes (Snakes). The sub-family is comprised of nine genera and some 46 species found in Europe, Africa and Asia.
Found on
http://www.probertencyclopaedia.com/browse/BV.HTM
No exact match found.
