- a
phylogenetic analysis by
Mallon et al.,
following the
traditional epiparietal homology scheme from
their description of ****lypeus shipporum. Bravoceratops...
-
substance of P1 and,
through fusion, form a
composite epiparietal, that is
equivalent to the
second epiparietal (P2)
normally formed in a more
lateral position...
- 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...
-
there are
typically five
epiparietals,
including a
midline osteoderm. With Torosaurus,
there are ten or twelve, a
midline epiparietal being absent. Also the...
- in Alberta, Canada. The
species has been
described as
having a
first epiparietal pointing upwards instead of forwards. In 2016,
Mallon et al.
found P...
-
presence of a single,
midline epiparietal ossification that is
offset from the
plane of the
frill and
other epiparietals towards the
rostrum with parietals...
-
Chinese Sinoceratops has
similar epiparietals, but in
addition a
central midline epiparietal and
bumps below the
epiparietals,
which are
lacking in Wendiceratops...
-
Skulls of the
three species compared: P.
perotorum (with
inaccurate epiparietal placement), P. canadensis, and P. lakustai...
-
spikes 2–4. The
first epiparietal is
small and
variably procurving and thus was
misinterpreted before. At
least one more
epiparietal pair was also identified...
- at the top of the frill;
these would have been
capped by
epiparietals.
Midline epiparietals are
otherwise only
known in chasmosaurines, and
another contrast...
