- The
zygosphene-zygantrum
articulation is an
accessory joint between vertebrae found in
several lepidosauromorph reptiles. This
pivot joint consists of...
- overlapping, and of a pair of
anterior wedge-shaped
processes called zygosphene, ****ing into a pair of
corresponding concavities, zygantrum, just below...
-
found in
several different reptile lineages; a
known example are the
zygosphene-zygantrum
articulations found in snakes. Hyposphene-hypantrum articulations...
- less
pronounced accessory articular processes (at the time
identified as
zygosphene-zygantrum articulations). The
rocks in
which these fossils were discovered...
- lacing. The
marginal teeth are stout,
bicarinate and
smooth or striated.
Zygosphenes and
zygantra are absent,
incipient or
large and functional. Prognathodon...
-
swollen moving anterior to posterior,
indicative of
pachyostotic nature.
Zygosphenes presence are
notable in some vertebrae. They
project anteriorly from...
- process;
coalescent infra- and
suprastapedial processes of quadrate;
zygosphene-zygantrum
complex absent;
synapophyses of the
cervical vertebrae extending...
-
characterized by a low
neural spine, and
subdivided paradiapophysis and thin
zygosphene. The
vertebrae are
medium to large, so the
snake would measure about 1...
- to that of the
other species in its
general proportions and the
strong zygosphene-zygantrum articulation. C.
iguanavus can be
differentiated in its central...
-
vertebrae have tall,
straight neural spines that lack any
processes or
zygosphene-zygantrum articulation, a
joint found in most squamates. The
caudal vertebrae...
