AnAge Browser

Order	Family	Genus	n entries	Options
Squamata	Viperidae	Agkistrodon	3	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Atropoides	2	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Bitis	3	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Bothriechis	4	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Bothrops	7	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Causus	1	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Cerastes	1	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Cerrophidion	1	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Crotalus	19	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Daboia	1	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Echis	2	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Eristicophis	1	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Gloydius	1	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Lachesis	1	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Macrovipera	1	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Ophryacus	2	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Ovophis	1	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Pseudocerastes	1	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Sistrurus	3	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Trimeresurus	5	Options ▾ Commands Query Survey Search ADW TOL ITIS Google
		Vipera	6	Options ▾ Commands Query Survey Search ADW TOL ITIS Google

Found 21 branches in Viperidae (query or survey).