Viperidae

Definitions

proper noun A taxonomic family within the superfamily Colubroidea — many venomous snakes (the vipers).

Vipera +‎ -idae

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Then there are the Viperidae, rattlesnakes and pit vipers and copperheads, that also have front fangs, but phylogenetically belong to a distinct lineage from the elapids.

The Panda's Thumb: Development Archives 2010
Ontogenetic allometry in the fang in the front-fanged Causus rhombeatus Viperidae displaces the fang along the upper jaw.

The Panda's Thumb: Development Archives 2010
The family Lacertidae, characterized by small, long-tailed lizards, is represented in the hotspot by more than 60 species, a quarter of the world total, while the family Viperidae, stocky venomous snakes, is represented by nearly 20 species.

Biological diversity in the Mediterranean Basin 2008
In Canada there is only one member of the Viperidae family:

Reptile families 2008
Triceratolepidophis sieversorum, a new genus and species of pitviper (Reptilia: Serpentes: Viperidae: Crotalinae) from Vietnam.

Biological diversity in Indo-Burma 2008
Nicholas recognized cobras, kraits, puff adders, but there were all manner of Viperidae that he could not identify.

Floating City Lustbader, Eric 1990
Crotalus and the Viperidae, and plenty of new (as far as my knowledge goes) saurians.

More Letters of Charles Darwin — Volume 1 Charles Darwin 1845
A New Long-Tailed Rattlesnake (Viperidae) From Guerrero, Mexico

Archive 2008-12-01 2008