- the Old World,
viperids are
located everywhere except Siberia, Ireland, and
north of the
Arctic Circle in
Norway and Sweden. Wild
viperids are not found...
- Currently, 23
genera and 155
species are recognized:
These are also the only
viperids found in the Americas. The
groups of
snakes represented here
include rattlesnakes...
-
delivered through fangs.: 243 The
fangs of 'advanced'
venomous snakes like
viperids and
elapids are hollow,
allowing venom to be
injected more effectively...
-
Mojave rattlesnake (Crotalus scutulatus), a
viperid, is
primarily neurotoxic. Both
elapids and
viperids may
carry numerous other types of toxins. Postsynaptic...
-
species within its range, it may be
encountered by humans.
Unlike other viperids, they
often "freeze"
instead of
slithering away, due to its
habit of relying...
-
colubrid snakes. It is
distinguished from the
venom gland and is not
found in
viperids or elapids. It was
named for
French zoologist Georges Louis Duvernoy who...
-
Until recently,
colubrids were
basically colubroids that were not elapids,
viperids, or Atractaspis. However,
recent research in
molecular phylogenetics has...
- adders,
tiger snakes, mambas, king cobras,
cobras and more.
Viperidae (
viperids) True vipers,
including the Russell's viper, saw-scaled vipers, puff adders...
-
length and
mobility between typical colubrids (long, less mobile) and
viperids (very short,
highly mobile). When the
mouth is closed, the
fangs fit into...
-
differentiate species from each another. In many
species of
boids and
viperids, the
supraoculars are
heavily fragmented. In others, such as the colubrids...
