-
fossils of
Achelousaurus were
collected in
Montana in 1987, by a team led by Jack Horner, with more
finds made in 1989. In 1994,
Achelousaurus horneri was...
- albertensis, but in a
clade including Pachyrhinosaurus,
Einiosaurus and
Achelousaurus, and
therefore McDonald and
Horner gave the
species the new
genus name...
- holotype, a name-bearing specimen. The same
abstract named Type C as
Achelousaurus horneri. In 1995,
Sampson published a
larger article,
indicating the...
- Styracosaurus, Stellasaurus, Einiosaurus,
Achelousaurus, and Pachyrhinosaurus.
Pachyrhinosaurus and
Achelousaurus form the
clade of
pachyrhinosaurins called...
-
intraspecific combat. The m****ive
bosses on the
skulls of
Pachyrhinosaurus and
Achelousaurus resemble those formed by the base of the
horns in
modern musk oxen,...
-
include Pachyrhinosaurus, Avaceratops, Einiosaurus, Albertaceratops, and
Achelousaurus. The
cladogram presented below represents a
phylogenetic analysis by...
-
Rubeosaurus (now seen as a
synonym of Styracosaurus), Einiosaurus, and
Achelousaurus were
discovered in.
Originally proposed as a
distinct taxon in 1992...
-
Achelousaurus horneri...
- TMP 2002.76.1,
which may be a
specimen of Pachyrhinosaurus,
Achelousaurus, or a new taxon, in
Royal Tyrrell Museum...
-
Yehuecauhceratops Centrosaurini Centrosaurus Coronosaurus Spinops Styracosaurus?
Pachyrhinosaurini Achelousaurus Einiosaurus Stellasaurus Pachyrhinosaurus...
