- the
placement of the
genus Sphaerotholus within the Pachycephalosauria. They
recovered all
proposed species of
Sphaerotholus as a
monophyletic group of...
- Wannanosaurus, Goyocephale, Stegoceras, Homalocephale, Tylocephale,
Sphaerotholus, and Prenocephale.
Within the
tribe Pachycephalosaurini, Pachycephalosaurus...
- ****van
considered Foraminacephale, "Prenocephale" edmontonensis, and
Sphaerotholus goodwini to form a
clade with the
Asian taxon P. prenes. He considered...
- three-quarters the size of Prenocephale, and
about the same size as
Sphaerotholus and Foraminacephale. The
latter measured 1.5
metres (4.9 ft) long and...
-
Ankylosaurus and Denversaurus, the
pachycephalosaurs Pachycephalosaurus and
Sphaerotholus, and the
theropods Ornithomimus, Struthiomimus, Acheroraptor, Dakotaraptor...
- †Goyocephale †Homalocephale †Platytholus †Prenocephale †Sinocephale †
Sphaerotholus †Tylocephale †Pachycephalosaurini ****van, 2003 †Alaskacephale? †Pachycephalosaurus...
-
derived pachycephalosaurids Stygimoloch, Dracorex, Pachycephalosaurus,
Sphaerotholus, and an
undescribed specimen from
North Dakota. The
first two might...
- base of the skull. Two
traits also
differentiate Foraminacephale from
Sphaerotholus and Prenocephale:
there are
prominent grooves between the
central lobe...
-
Sphaerotholus edmontonensis Sphaerotholus goodwini Sphaerotholus buchholtzae Pachycephalosaurus Alaskacephale...
-
Titanoceratops ouranos; and the
pachycephalosaurs Stegoceras novomexicanum and
Sphaerotholus goodwini.
Saurischians include the
tyrannosaurid Bistahieversor sealeyi;...
