-
twelve epiparietals,
while the
younger MOR 981
possesses ten,
seeming to
indicate an
evolutionary sequence in
which the
number of
epiparietals gradually...
- characters—including the
presence of more than six
epiparietals on each side of the frill, the large, flat,
bladelike epiparietals, the
round premaxillary external narial...
- this case
called epiparietals. Each
parietal had five of them,
conventionally numbered "p1" to "p5". The
fifth and
fourth epiparietals, the ones in front...
-
presence of a single,
midline epiparietal ossification that is
offset from the
plane of the
frill and
other epiparietals towards the
rostrum with parietals...
- ones not
elongated at all.
Similar to
Einiosaurus and Achelousaurus, no
epiparietals or episquamosals, in the
sense of
separate "frill ossifications", have...
- at the top of the frill;
these would have been
capped by
epiparietals.
Midline epiparietals are
otherwise only
known in chasmosaurines, and
another contrast...
-
project to
above and sideways, all six
epiparietals (frill horns) that are
fused at
their base,
first two
epiparietals pairs that curl down the
frill surface...
- the
growth positions of the
second epiparietals, the P2 loci.
Coronosaurus has also a
uniquely shaped P3
epiparietal. It is
variably developed as a short...
-
triangular osteoderms: up to
twelve episquamosals at the
squamosal and
three epiparietals at the
parietal bone.
These are
largest at the rear
corners of the frill...
-
perotorum mounted at the
Perot Museum; note the
small forwards pointing epiparietals at the top of the frill,
which were
inaccurately reconstructed following...
