- 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...
- lacing. The
marginal teeth are stout,
bicarinate and
smooth or striated.
Zygosphenes and
zygantra are absent,
incipient or
large and functional. Prognathodon...
- maxillary/premaxillary overlap.
Sophineta resembles lepidosaurs in
having weak
zygosphenes,
short vertebrae and single−headed ribs
throughout the column, but differs...
-
swollen moving anterior to posterior,
indicative of
pachyostotic nature.
Zygosphenes presence are
notable in some vertebrae. They
project anteriorly from...
- less
pronounced accessory articular processes (at the time
identified as
zygosphene-zygantrum articulations). The
rocks in
which these fossils were discovered...
- surangular.
Cervicals with
reniform central articulations and
prominent zygosphenes and zygantra.
Dental formula: 4
teeth in premaxilla, 12–13
teeth in maxilla...
-
found in
several different reptile lineages; a
known example are the
zygosphene-zygantrum
articulations found in snakes. Hyposphene-hypantrum articulations...
- The
presence of
accessory articulations, like the
zygantra and the
zygosphenes, are
there to
supposedly to have
dampened the
twisting movements of the...
-
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...
