- in 1975 by W.
Langston Jr. to
Pachyrhinosaurus were also
recovered at the
Scabby Butte locality.
Another Pachyrhinosaurus bonebed, on the
Wapiti River...
- the
outside than the
comparable spikes of
Pachyrhinosaurus.
Achelousaurus also
differs from
Pachyrhinosaurus in its
smaller nasal boss that does not reach...
- Styracosaurus, Stellasaurus, Einiosaurus, Achelousaurus, and
Pachyrhinosaurus.
Pachyrhinosaurus and
Achelousaurus form the
clade of
pachyrhinosaurins called...
-
group not with
Styracosaurus albertensis, but in a
clade including Pachyrhinosaurus,
Einiosaurus and Achelousaurus, and
therefore McDonald and
Horner gave...
-
Pachyrhinosaurus canadensis.
Until 2016, the only
division used was Pachyrhinosaurini,
which is
defined as
centrosaurines closer to
Pachyrhinosaurus canadensis...
- had
spanned the gap
between the
older Styracosaurus and the
later Pachyrhinosaurus. He
deliberately declined to name
these three taxa. The
oldest form...
-
displays or for
intraspecific combat. The m****ive
bosses on the
skulls of
Pachyrhinosaurus and
Achelousaurus resemble those formed by the base of the
horns in...
- same animal.
Other members of the
Centrosaurinae subfamily include Pachyrhinosaurus, Avaceratops, Einiosaurus, Albertaceratops, and Achelousaurus. The...
-
Einiosaurus on a
single evolutionary line that led to
Achelousaurus and
Pachyrhinosaurus. Like
other ceratopsid dinosaurs,
Stellasaurus would have had complex...
- migrating. It
shows a 1000-mile
autumn migration of
Edmontosaurus and
Pachyrhinosaurus from
their summer grazing in
northwest Canada (then well
inside the...
