The Family Viperidae includes the venomous snakes, with an estimated 350 living species. The Family Viperidae evolved around 55 million years ago based on current evidence. Characteristics of Viperidae generally include long, legless bodies covered in scales, and long, hollow, and hinged fangs that allow the injection of venom to incapacitate/kill prey or as a defense mechanism.
Kingdom: Animalia
-Phylum: Chordata
—Class: Reptilia
——Order: Squamata
I have photographed 1 Viperidae so far:
–Water Moccasin (Agkistrodon piscivorus)