-
distinguishing characteristics that are not also
found in
other ceratopsians.
Early members of the
ceratopsian group, such as Psittacosaurus, were
small bipedal animals...
-
illustrating the
origins of
ceratopsians in general,
suggesting an
Asian origin in the Jur****ic and the
appearance of
truly horned ceratopsians by the beginning...
-
Protoceratopsidae is a
family of
basal (primitive)
ceratopsians from the Late
Cretaceous period.
Although ceratopsians have been
found all over the world, protoceratopsids...
-
ornithischian dinosaur closely related to
ceratopsians representing a
possible common ancestor between ankylosaurs and
ceratopsians.
Since Protoceratops was more...
-
dental batteries,
suggesting that the
animal sliced up plants. Like
other ceratopsians, this
dinosaur may have been a herd animal,
travelling in
large groups...
-
study of
Norman placed ceratopsians between Hypsilophodon and more
derived ornithopods, the
study of
Sereno placed ceratopsians with
ankylosaurs and stegosaurs...
-
roughly 66
million years ago. All
ceratopsians became extinct at the end of this era. Microceratus, like all
ceratopsians, was a herbivore.
During the Cretaceous...
- was
probably not
directly ancestral to any
other groups of
ceratopsians. All
other ceratopsians retained the
fifth digit of the hand, a
plesiomorphy or primitive...
-
change during ontogeny, the
resulting tree was
basically the same. The
ceratopsians more
derived than psittacosaurids,
called neoceratopsians,
evolved in...
- both the
pachycephalosaurs and the
ceratopsians,
although these features have been lost in all
known ceratopsians more
derived than Yinlong. The addition...
